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Chemistry

Chemical elements

Acids and bases

Alloys and ceramic compounds

Molecular compounds

Organic compounds

Reactions and synthesis

Separation processes

Chemical engineering

1,1,1,2-Tetrafluoroethane

HFC, hydrofluoroalkane refrigerant

1,2-rearrangement

Organic reaction

Chemical compound

Primary alcohol compound

Absolute configuration

Chemical notation for the handedness of a chiral molecule or group

Absolute electrode potential

Electrode potential in electrochemistry

Absorption (chemistry)

Chemical process

Absorption spectroscopy

Spectroscopic techniques that measure the absorption of radiation

Chemical compound

Chemical compound

Colorless and faint organic acid found in vinegar

Unsaturated hydrocarbon with formula C2H2

Type of chemical substance

Index of chemical compounds with the same name

Any salt whose anion is a partially deprotonated polyprotic acid

Measure of the tendency of an acid to dissociate

Acid–base reaction

Chemical reaction

Acidity function

Measure of acidity

F-block chemical elements

Chemical element with atomic number 89

Activated complex

An arrangement of atoms in an arbitrary region near the saddle point of a potential energy surface

Activation energy

Energy that must be input to a system to undergo a reaction or process

Activity coefficient

Value accounting for thermodynamic non-ideality of mixtures

Class of substitution reactions involving nucleophiles and acyl compounds

Molecule with three connected cyclohexane rings arranged in the "armchair" configuration

Addition reaction

Chemical reaction where two or more molecules combine to form a larger one (the adduct)

Phenomenon of surface adhesion

Suspension of fine solid particles or liquid droplets in a gas

Chemical process

Branch of natural philosophy

Type of organic compound

Type of carbonyl coumpound

Aldol condensation

Type of chemical reaction

Alicyclic compound

Chemical compound having a carbocyclic, non-aromatic ring structure

Aliphatic compound

Class of chemical compounds without aromatic ring

Basic, ionic salt of an alkali metal or alkaline earth metal chemical element

Group of highly-reactive chemical elements

Any double salt in which one of the two types of anions are oxide or hydroxide anions

Alkaline earth metal

Group of chemical elements

Class of simple organic hydrocarbons

Chemical compound

Acyclic hydrocarbon

Chemical compound

Allotropes of carbon

Materials made only out of carbon

Allotropes of oxygen

Different chemical forms of elemental oxygen

Allotropes of phosphorus

Solid forms of the element phosphorus

Allotropes of sulfur

Class of substances

Property of some chemical elements to exist in two or more different forms

Mixture or metallic solid solution composed of two or more elements

Steel alloyed with a variety of elements

Allyl isothiocyanate

Chemical compound

Allylic rearrangement

Family of double sulfate salts of aluminium

Chemical element with atomic number 13

Aluminium acetate

Index of chemical compounds with the same name

Aluminium carbide

Chemical compound

Aluminium chloride

Chemical compound

Aluminium diacetate

Chemical compound

Aluminium monoacetate

Chemical compound

Aluminium oxide

Chemical compound with formula Al2O3

Aluminium sulfate

Chemical compound

Aluminium triacetate

Chemical compound

Amalgam (chemistry)

Alloy of mercury with another metal

Chemical element with atomic number 95

Organic compounds of the form RC(=O)NR′R″

Chemical compounds and groups containing nitrogen with a lone pair (:N)

Chemical compound

Ammonia solution

Chemical compound

Ammonium acetate

Chemical compound

Ammonium bicarbonate

Chemical compound

Ammonium carbonate

Chemical used as leavening agent and smelling salt

Ammonium chloride

Chemical compound

Ammonium dihydrogen phosphate

Chemical compound

Ammonium ferric citrate

Chemical compound

Ammonium metavanadate

Chemical compound

Ammonium nitrate

Chemical compound with formula NH4NO3

Ammonium nitrite

Chemical compound

Ammonium perchlorate

Chemical compound

Ammonium permanganate

Chemical compound

Ammonium sulfate

Chemical compound

Ammonium thiosulfate

Chemical compound

Amount of substance

Extensive physical property

Hydrophilic and lipophilic chemical compound

Property of some chemical compounds which may react either with an acid or a base.

Analytical chemistry

Study of the separation, identification, and quantification of matter

Electrode through which conventional current flows into a polarized electrical device

Class of compounds

Class of chemical compounds

Class of yellow or white flavonoid pigments found in plants

Antiaromaticity

Characteristic of a cyclic molecule with a π electron system that has higher energy

Chemical element with atomic number 51

Mixture of nitric acid and hydrochloric acid in a 1:3 molar ratio

Aqueous solution

Solution in which the solvent is water

Arene substitution pattern

Position of molecules attached to benzene rings

Chemical element with atomic number 18

Argon compounds

Class of chemical compounds

Argon fluorohydride

Chemical compound

Aromatic compound

Compound containing rings with delocalized pi electrons

Chemical property

Arrhenius equation

Formula for temperature dependence of rates of chemical reactions

Technique to describe progression of organic chemistry reaction mechanisms

Chemical element with atomic number 33

Chemical compound

Waste product of fires

Chemical element with atomic number 85 (At)

Atomic absorption spectroscopy

Method to identify chemical elements by their absorption of radiation

Atomic emission spectroscopy

Analytical method using radiation to identify chemical elements in a sample

Rest mass of an atom in its ground state

Number of protons found in the nucleus of an atom

Any measure of the size of atoms

Atomic spectroscopy

Scientific technique

Type of stereoisomer

Avogadro constant

Fundamental metric system constant defined as the number of particles per mole

Mixture of two or more liquids whose proportions do not change following distillation

Azeotropic distillation

Any of a range of techniques used to break an azeotrope in distillation

Chemical compound with azide ion or azide group

First synthetic plastic

Dry chemical leavening agent

Ball-and-stick model

Molecular model

Chemical element with atomic number 56

Barium manganate

Chemical compound

Barium permanganate

Chemical compound

Barium peroxide

Chemical compound

Base (chemistry)

Type of chemical substance

Common and inexpensive metal

Basic lead phosphite

Chemical compound

Reaction vessel used in the process industries, operating on discrete batches

Bent molecular geometry

Molecular geometry

Benzalkonium chloride

Surfactant and antiseptic agent

Organic chemical compound

Chemical compound

Chemical element with atomic number 97

Chemical element with atomic number 4

Beryllium carbide

Chemical compound

Theory for physical adsorption of gas molecules on a solid surface

Polyatomic anion

Chemical element with atomic number 83

Block (periodic table)

Set of adjacent groups

Chemical element 107

Boiling-point elevation

Elevation of boiling point due to addition of a compound

Any chemical compound composed of boron and hydrogen atoms only

Boron-oxygen compound

BORAX experiments

Series of boiling water nuclear reactors safety experiments

Weak acid of boron

Any chemical compound having a borohydride anion

Chemical element with atomic number 5

Group of chemical elements

Refractory compound with formula BN

Alloy of copper and zinc

Chemical compound or ion

Chemical element with atomic number 35

Brønsted–Lowry acid–base theory

Chemical theory about acids and bases

Alloy of copper and tin

Buckminsterfullerene

Carbon allotrope

Buffer solution

Aqueous solution consisting of a mixture of a weak acid and its conjugate base,

Organic compound

A foul-smelling diamine compound produced by the putrefaction of animal tissue

Chemical element with atomic number 48

Cadmium sulfide

Chemical compound

Chemical element with atomic number 55

Cahn–Ingold–Prelog priority rules

Naming convention for stereoisomers of molecules

Chemical element with atomic number 20 (Ca)

Calcium acetate

Chemical compound

Calcium carbide

Chemical compound

Calcium carbonate

Chemical compound

Calcium chloride

Chemical compound

Calcium citrate

Chemical compound

Calcium diglutamate

Chemical compound

Calcium fluoride

Chemical compound

Calcium hydroxide

Chemical compound

Calcium hydroxide

Calcium hydroxide solution

Chemical compound of calcium

Calcium permanganate

Chemical compound

Calcium sulfide

Chemical compound of formula CaS

Chemical element with atomic number 98 (Cf)

Determining heat transfer in a system by measuring its other properties

Waxy transparent aromatic organic compound

Pungent chemical compound in chili peppers

Process of liquifying sugar

Inorganic compound group

Chemical element with atomic number 6

Chemical compound with formula CO₂

Carbon disulfide

Neurotoxic compound with formula S=C=S

Group of chemical elements

Carbon monoxide

Colourless, odourless, tasteless and toxic gas

Carbon nanotube

Allotropes of carbon with a cylindrical nanostructure

Steel in which the main interstitial alloying constituent is carbon

Carbon tetrachloride

Chemical compound

Carbon tetrafluoride

Chemical compound

Isotope of carbon

Salt of carbonic acid

Chemical compound

Functional group (C=O)

Any chemical compound composed of carbon, boron and hydrogen atoms only and which has a similar structure to boranes

Chemical compound

Carboxylic acid

Organic compound

Chemical compound

Chemical compound

Chemical compound

Iron-carbon alloys with a carbon content more than 2%.

Chemical process

Electrode from which conventional current leaves a polarized electrical device

Compound of iron and carbon

Ceramic engineering

Science and technology of creating objects from inorganic, non-metallic materials

Chemical element with atomic number 58 (Ce)

Chemical compound

Sequence of reactions

Abstraction of an atom from another molecule by the radical end of a growing chain-polymer

Chain-growth polymerization

Polymerization technique

Group of chemical elements

Type of chemical bonding with metal ions

Association of atoms to form chemical compounds

Chemical composition

Concept in chemistry that has different, but similar, meanings if referred to a single pure substance or a mixture

Chemical compound

Substance composed of multiple elements that are chemically bonded

Chemical decomposition

Breakdown of a single entity (normal molecule, reaction intermediate, etc.) into two or more fragments; opposite or reverse process of a synthesis reaction

Chemical element

A species of atoms having the same number of protons in the atomic nucleus

Chemical engineer

Professional in the field of chemical engineering

Chemical equation

Symbolic representation of a chemical reaction

Chemical equilibrium

State which both reactants and products are present in concentrations which have no further tendency to change with time

Chemical formula

Compact notation for chemical compounds

Chemical kinetics

Study of the rates of chemical reactions

Law of nature relevant to chemistry

Chemical nomenclature

Systematic naming of chemical compounds

Chemical polarity

Electrostatic property of a molecule

Chemical process

Method or means of somehow changing one or more chemicals or chemical compounds

Chemical reaction

Chemical reaction with at least one reaction intermediate and involving at least two consecutive elementary reactions

Chemical reaction

Process that results in the interconversion of chemical species

Chemical reactor

Vessel designed to contain chemical reactions

Chemical safety

Means of ensuring that chemicals are safe

Chemical substance

Chemical synthesis

Planned series of chemical reactions to produce a desired substance

Qualitative or quantitative procedure designed to detect presence of, or quantify, a chemical compound or group

Chemical thermodynamics

Study of chemical reactions within the laws of thermodynamics

Cheminformatics

Computational chemistry

Phenomenon of surface adhesion

Scientist trained in the study of chemistry

Scientific discipline

Chirality (chemistry)

Geometric property of some molecules and ions

An anion and term for chemical compounds containing it

Main anion present in sea water

Chemical element with atomic number 17

Oxyanion with as chemical formula ClO2−

Chlorofluorocarbon

Class of organic compounds commonly used as refrigerants

CHCl3, historical anaesthetic and common solvent

Chemical compound

Chromate and dichromate

Set of physico-chemical techniques developed for the separation of mixtures

Chemical compound and dye

Chemical element with atomic number 24 (Cr)

Chromium(II) acetate

Chemical compound

Chemical compound

Cis–trans isomerism

Distinct arrangements of substituents around double bonds in chemistry

Chemical compound

Weak organic acid

Chemical compound

Clathrate compound

Chemical substance consisting of a lattice that traps or contains molecules

Chemical mixture

Chemical element with atomic number 27

Cobalt(II) sulfate

Chemical compound

Colligative properties

Property of solutions that depend upon the ratio of the number of solute particles to the number of solvent molecules in a solution

Collision frequency

Number of collisions made by particles in a volume per time

Collision theory

Kinetic theory of gases

A mixture of an insoluble substance microscopically dispersed throughout another substance

Various colors of gold obtained by alloying gold with other elements

Column chromatography

Method used to purify individual chemical compounds from mixtures of compounds

Chemical reaction

Combustion analysis

Method to determine the elemental composition of organic compounds

Complexometric indicator

Chemical detector for metal ions in complexometric titrations

Computational chemistry

Branch of chemistry

Proportion of a constituent of a mixture to the whole

Condenser (laboratory)

Laboratory apparatus used to condense vapors

Congener (chemistry)

Related chemicals

Conjugate (acid-base theory)

Bronsted-Lowery acid-base theory

Alloy of copper and nickel

Continuous distillation

Form of distillation

Continuous stirred-tank reactor

Type of chemical reactor

Convergent synthesis

Conversion (chemistry)

Any of several relative and absolute measures of the amount of reactants consumed in a chemical reaction

Coordination complex

Molecule or ion containing ligands datively bonded to a central metallic atom

Coordination geometry

Geometric arrangement of atoms about a given central atom in a coordination complex

Coordination sphere

Central atom or ion and an array of molecules or anions, the ligands, around

Chemical element 112

Chemical element with atomic number 29 (Cu)

Copper(II) acetate

Chemical compound

Copper(II) sulfate

Chemical compound

Gradual destruction of materials by chemical reaction with its environment

Electrochemical measurement principle in which the electric charge required to carry out a known electrochemical reaction is measured

Aromatic chemical compound

Chemical bond that involves the sharing of electron pairs between atoms

Cracking (chemistry)

Thermal or catalytic decomposition of a compound such as a hydrocarbon into chemical species of smaller molecular weight

Tar distillation byproduct used as wood preservative

Cross-flow filtration

Filtration technique

Crystal field theory

Model that describes the breaking of degeneracies of electron orbital states, usually d or f orbitals, due to a static electric field produced by a surrounding charge distribution (anion neighbors)

Triarylmethane dye used as a histological stain and in Gram's method of classifying bacteria

Alloy of copper that contains nickel

Chemical element with atomic number 96 (Cm)

Any chemical compound with cyanide anion

Chemical compound

Cyclic compound

Molecule with a ring of bonded atoms

Cyclic voltammetry

Analytical method in electrochemistry

Organic chemical reaction

Saturated alicyclic hydrocarbon

Organic compound

Organic molecule

Cyclohexane conformation

Structures of cyclohexane

Cyclonic separation

Method of removing particulates from a fluid stream through vortex speration

Chemical compound

Chemical compound

Dangerous goods

Solids, liquids, or gases harmful to people, other organisms, property or the environment

Chemical element 110

Dean–Stark apparatus

Chemical lab apparatus for collecting water from a reactor

Chemical compound

Degree of unsaturation

Term in organic chemistry

Removal of proton(s) from a molecule in an acid-base reaction

Descriptor (chemistry)

Type of notational prefix in chemistry nomenclature

Hygroscopic substance that induces or sustains a state of dryness (desiccation) in its vicinity

Destructive distillation

Process of decomposition of organic material by heating it in the absence of air.

Isotope of hydrogen with one neutron

Deuterium-depleted water

A form of water.

Diammonium phosphate

Chemical compound

Allotrope of carbon often used as a gemstone and an abrasive

Stereoisomers not related as mirror images; characterized by differences in physical properties, and by some differences in chemical behaviour towards achiral as well as chiral reagents.

Diatomic molecule

Molecule composed of only two atoms of the same or different chemical elements

Chemical compound

Dichlorine monoxide

Chemical compound

Dichlorodifluoromethane

Chemical compound

Dichloromethane

Chemical compound

Dielectric spectroscopy

A measuring tool

Diels–Alder reaction

Chemical reaction

Organic chemical compound

Chemical compound

Dimethyl sulfoxide

Organosulfur chemical compound used as a solvent

Dimethylformamide

Chemical compound

Chemical compound containing two hydroxyl groups

Chemical compound

Disodium citrate

Chemical compound

Disodium helide

Chemical compound

Dispersion (chemistry)

System in which components are dispersed in a continuous phase of different composition, where at least one of the phases consists of finely divided phase domains

Disproportionation

Redox reaction in which a chemical species of intermediate oxidation state is converted into two different species of higher and lower oxidation states

Dissociation (chemistry)

General process in which molecules (or ionic compounds such as salts, or complexes) separate or split into smaller particles such as atoms, ions or radicals, usually in a reversible manner

Dissociation constant

Chemical property

Method of separating mixtures

Divergent synthesis

Method of chemical research

Chemical compound

Chemical bond involving four bonding electrons; has one sigma plus one pi bond

Removal of water or another solvent by evaporation from a solid, semi-solid or liquid

Synthetic chemical element with atomic number 105

Trade name of age-hardenable aluminium alloy

Chemical element with atomic number 66

E1cB-elimination reaction

Elimination reaction which occurs under basic conditions where the hydrogen to be removed is relatively acidic, while the leaving group is a relatively poor one

Eclipsed conformation

Reaction mechanism in organic chemistry

Chemical element with atomic number 99

Ionic compound with electrons as the anion

Electroanalytical methods

Analytical methods in chemistry

Electrochemical cell

Electro-chemical device

Electrochemistry

Branch of chemistry

Technique in chemistry and manufacturing

Ionic solids whose dissociation in water free up ions carrying the electrical current in solution

Electrolytic cell

Cell that uses electrical energy to drive a non-spontaneous redox reaction

Electron affinity

Amount of energy released when an electron is attached to a neutral atom or molecule in the gaseous state to form a negative ion

Electron counting

Formalism used for classifying compounds and for explaining or predicting electronic structure and bonding

Electronegativity

Tendency of an atom to attract a shared pair of electrons

Electron pair acceptor

Electrophilic addition

Chemical reaction

Electrophilic substitution

Chemical reactions in which an electrophile displaces a functional group in a compound, which is typically, but not always, a hydrogen atom.

Electrophoresis

Motion of charged particles in electric field

Electrosynthesis

Chemical process

Alloy of gold and silver

Elemental analysis

Process of analytical chemistry

Elementary reaction

Single-step chemical reaction

Elimination reaction

Type of organic reaction in which two substituents are removed from a molecule in either a one or two-step mechanism

Empirical formula

Formula which tells relative ratio of different atoms in a compound

Mixture of two or more liquids that are generally immiscible

Emulsion polymerization

Polymerization technique

Stereoisomers which are non-superposable mirror images of each other

Enantioselective synthesis

Form of chemical synthesis

Endohedral fullerene

Class of chemical compounds

Organic compound with a C=C–OH group

Entropy of activation

Environmental chemistry

Scientific study

Medication and stimulant

Class of chemical compounds

Family of two-part adhesive resins

Equilibrium constant

Chemical property

Chemical element with atomic number 68

Chemical compound

Compound derived from an acid

Emergency service protocol

Organic compound (H3C–CH3)

Organic compound (CH3CH2OH)

Class of organic compounds

Chemical compound

Unsaturated hydrocarbon with formula C2H4

Ethylene glycol

Chemical compound

Ethylenediamine

Chemical compound

Ethylenediaminetetraacetic acid

Chemical compound

Chemical compound

Chemical compound

Chemical element with atomic number 63

Eutectic system

Mixture with a lower melting point than its constituents

Exothermic reaction

Chemical reaction that releases energy as light or heat

Extended periodic table

Periodic table of the elements with 8 or more periods

Extraction (chemistry)

Chemical separation of a substance from a matrix

Notation in organic chemistry for double bonds

Cyber espionage group

Class of chemical compounds

Chemical element with atomic number 100

Anion in which a Fe3+ ion is complexed by 6 CN− ions

Ferrite (magnet)

Ceramic materials, many of them magnetic

Chemical compound

Pyrophoric alloy whose primary components are cerium and iron

Anion in which a Fe2+ ion is complexed by 6 CN− ions

Process that separates solids from fluids

Analytic procedure used in chemistry to detect the presence of certain elements

Flash evaporation

Partial vapor that occurs when a saturated liquid stream undergoes a reduction in pressure by passing through a throttling valve or other throttling device

A class of plant and fungus secondary metabolites

Chemical element 114

Process by which colloidal particles come out of suspension to precipitate as floc or flake

Flory–Huggins solution theory

Lattice model of polymer solutions

Fluorescence correlation spectroscopy

Chemical element with atomic number 9 and a atomic mass of 19

Fluoroantimonic acid

Chemical compound

Fluorosulfuric acid

Chemical compound

Foam (disambiguation)

Topics referred to by the same term

Folding (chemistry)

Physico-chemical process by which a molecule assembles itself its normal configuration shape without any external agent

Study of chemical processes and interactions of all biological and non-biological components of foods

Widely used toxic organic compound

Chemical compound

Fourier-transform infrared spectroscopy

Technique to analyze the infrared spectrum of matter

Fractional crystallization (chemistry)

Method for refining substances based on differences in their solubility

Fractional distillation

Separation of a mixture into its component parts

Fractional freezing

Process used to separate substances with different melting points

Fractionating column

Artifact used in distillation of liquid mixtures

Chemical element with atomic number 87

Free-radical addition

Addition reaction in organic chemistry involving free radicals

Low temperature dehydration process

Freezing-point depression

Drop in freezing temperature of a solvent due to the addition of solute

Freundlich equation

Empirical adsorption isotherm

Allotrope of carbon

Functional group

Group of atoms giving a molecule characteristic properties

Chemical element with atomic number 64

Eutectic alloy that is liquid at room temperature

Gallium nitride

Chemical compound

Galvanic series

Ordering of metals by nobility (ease of galvanisation)

Gas chromatography

Type of chromatography

Finnish high-tech company

An atypical situation where groups separated by a torsion angle of approximately 60°, is more stable than 180°

Gel (disambiguation)

Topics referred to by the same term

Gel permeation chromatography

Type of size exclusion chromatography (SEC)

Relationship between two atoms or functional groups

Any organic compound containing 2 hydroxyl groups bound to the same carbon atom

Chemical element with atomic number 32

GHS hazard pictograms

Standard set of hazard warning images

Globally Harmonized System of Classification and Labelling of Chemicals

International system of classification of chemicals managed by the United Nations that was set up to replace the assortment of hazardous material classification and labelling schemes previously used around the world

Glutamate flavoring

Generic name for flavor-enhancing compounds based on glutamic acid and its salts

Chemical compound widely used in food and pharmaceuticals

Topics referred to by the same term

Allotrope of carbon that is 200 times stronger than steel

Allotrope of carbon, mineral, substance

Chemical substance

Gravimetric analysis

Quantitative determination of a chemical species based on its mass

Grignard reaction

Organometallic coupling reaction

Group (periodic table)

Column of elements in the periodic table of the chemical elements

Group 10 element

Group of chemical elements

Group 11 element

Group 11 elements (Copper group)

Group 12 element

Group of chemical elements

Group 3 element

Group of chemical elements

Group 4 element

Group of chemical elements

Group 5 element

Group of elements in the periodic table

Group 6 element

Group of chemical elements

Group 7 element

Group of chemical elements

Group 8 element

Group of chemical elements

Group 9 element

Group of chemical elements

Main process of ammonia production

Chemical element with atomic number 72

Structure in electrochemistry

Redox reaction component

Binary compound, of which one part is a halogen atom and the other part is an element or radical that is less electronegative

Group of chemical compounds derived from alkanes containing one or more halogens

Organic compound containing at least one covalent carbon-halogen bond

Haloform reaction

Chemical reaction

Group of chemical elements

Hammond's postulate

Hypothesis in physical organic chemistry

Chemical element 108

Loosely defined subset of elements that exhibit metallic properties

Chemical element with atomic number of 2

Helium compounds

Class of improbable chemical compounds only formed at very high pressure or low temperature

Helium isotope with two protons and one neutron

Isotope of helium

High-performance liquid chromatography

Technique used in analytical chemistry

Chemical element with atomic number 67 (Ho)

Host–guest chemistry

Supramolecular structures held together other than by covalent bonds

Host–guest chemistry

Class of compounds

Host–guest chemistry

In chemistry, the confinement of an individual molecule within a larger molecule

Chemical theory about acids and bases

Method of determining aromaticity in organic molecules

Chemical compound

Substance containing water or its constituent elements

A colorless flammable liquid with an ammonia-like odor

Any chemical compound having a hydrogen atom bonded to a more electropositive element or groups

Organic compound consisting entirely of hydrogen and carbon

Hydrochloric acid

Strong mineral acid

Hydrodynamic voltammetry

Voltammetry with forced flow towards the electrode surface

Hydrofluoric acid

Solution of hydrogen fluoride in water

Hydrofluorocarbon

Man-made organic compounds that contain fluorine and hydrogen atoms

Chemical element with atomic number 1 (H)

Atom of the element hydrogen

Intermolecular attraction between a hydrogen donor-and-acceptor pair

Hydrogen bromide

Chemical compound

Hydrogen chalcogenide

Any binary compound of hydrogen with chalcogens, including hydrogen polychalcogenides

Hydrogen chloride

Chemical compound

Hydrogen cyanide

Chemical compound

Hydrogen fluoride

Chemical compound

Hydrogen halide

Chemical compound consisting of hydrogen bonded to a halogen element

Hydrogen iodide

Chemical compound

Hydrogen peroxide

Chemical compound

Hydrogen selenide

Chemical compound

Hydrogen sulfide

Poisonous, corrosive and flammable gas

Chemical reaction between molecular hydrogen and another compound or element

Cleavage of chemical bonds by the addition of water

Aqueous cation H₃O⁺, the type of oxonium ion produced by protonation of water

Molecule or other molecular entity that is attracted to water molecules and tends to be dissolved by water

Molecule or surface that has no attraction to water

Family of the hydroxide salts

Hydroxyl radical

Neutral form of the hydroxide ion (OH−)

Hypochlorous acid

Chemical compound

Ice (disambiguation)

Topics referred to by the same term

Water ice in symmetrical shapes

Chemical compound

Chemical element with atomic number 49

Infrared spectroscopy

Interaction of infrared radiation with matter

Inorganic chemistry

Field of chemistry

Inorganic compound

Chemical compound without any carbon-hydrogen bonds

Instrumental chemistry

Study of analytes using scientific instruments

Intercity Experimental

Solid-state compound exhibiting metallic bonding, defined stoichiometry and ordered crystal structure

Intermolecular force

Force of attraction or repulsion between molecules and neighboring particles

Interstitial defect

Ion, and compounds containing the ion

Chemical element with atomic number 53

Ion chromatography

Chromatography process that separates ions and polar molecules based on their affinity to the ion exchanger

Chemical bonding involving attraction between ions

Ionization energy

Minimum amount of energy required to remove an electron from an atom or molecule in the gaseous state

Chemical element with atomic number 77

Class of chemical compounds composed of iron and oxygen

Inorganic compound with the formula FeO

Iron(II) sulfate

Chemical compound

Iron(II,III) oxide

Chemical compound

Iron(III) chloride

Chemical compound

Iron(III) citrate

Chemical compound

Iron(III) oxide

Chemical compound

Iron(III) sulfate

Chemical compound

Molecule with identical atomic composition as another, but with different structures or orientations

Process by which a molecule is transformed into a molecule with exactly the same atoms, but the atoms are rearranged

Organic compound

Isopropyl alcohol

Simplest secondary alcohol

Isotopes of beryllium

Isotopes of boron

Isotopes of carbon

Type of stable carbon atoms

Isotopes of fluorine

Isotopes of helium

Isotopes of hydrogen

Isotopes of lithium

Isotopes of neon

Isotopes of nitrogen

Isotopes of the element nitrogen

Isotopes of oxygen

Type of isotope that has 8 protons

IUPAC nomenclature of inorganic chemistry

Nomenclature of inorganic compounds

IUPAC nomenclature of organic chemistry

Nomenclature of organic compounds

Class of organic compounds having structure RCOR´

Kipp's apparatus

Laboratory device for preparing gases.

Programming language

Krypton difluoride

Chemical compound

Laminar flow reactor

Reaction using laminar dynamics

Langmuir adsorption model

Model describing the adsorption of a mono-layer of gas molecules on an ideal flat surface

Trivalent metallic rare-earth elements

Chemical element with atomic number 57

Law of definite proportions

Chemical law about the ratio of substances in a compound

Law of mass action

Law of multiple proportions

Chemical law that, if two elements form more than one compound, then the ratios of the masses of the second element which combine with a fixed mass of the first element will always be ratios of small whole numbers

Law of reciprocal proportions

Chemical element 103

Le Chatelier's principle

Principle to predict effects of a change in conditions on a chemical equilibrium

Chemical element with atomic number 82

Chemical compound

Lead(II) chromate

Chemical compound

Molecular fragment that departs with a pair of electrons in heterolytic bond cleavage

Lewis acids and bases

Chemical bond theory involving the transfer of an electronic pair from the donor (the base) to the acceptor (the acid)

Lewis structure

Diagrams for the bonding between atoms of a molecule and lone pairs of electrons

Molecule or functional group that binds or can bind to the central atom in a coordination complex

Ligand cone angle

Measure of the steric bulk of a ligand in a transition metal complex

Ligand field theory

Molecular orbital theory applied to transition metal complexes

Structural phenolic polymer in plant cell walls

Chemical mixture used as a pest control agent

Chemical compound

Chemical compound with a floral aroma

Linear combination of atomic orbitals

Technique in quantum chemistry

Linear molecular geometry

Affinity of a molecule or a moiety for a lipophilic environment

Liquid state of the element helium

Liquid hydrogen

Liquid state of the element hydrogen

Liquid nitrogen

Liquid state of nitrogen

One of the physical forms of elemental oxygen

Liquid–liquid extraction

Method to separate compounds based on their relative solubilities in two different immiscible liquids, usually water and an organic solvent; extraction of a substance from one liquid into another liquid phase

List of copper alloys

Metal alloy with copper as its principal component

Chemical element with atomic number 3 (Li)

Lithium (medication)

Type of psychiatric medication

Lithium borohydride

Chemical compound

Lithium nitride

Chemical compound

Chemical compound

Lithium peroxide

Chemical compound

Lithium sulfide

Chemical compound

Test for level of chemical acidity

Liver of sulfur

Chemical mixture used for quickly oxidizing metal surfaces, often to give new work the appearance of being old

Synthetic radioactive chemical element with atomic number 116 and symbol Lv

London dispersion force

Cohesive force between species

Mixture of water, iodine and potassium iodide

Chemical element with atomic number 71

Sodium hydroxide and potassium hydroxide

Chemical compound

Chemical element with atomic number 12 (Mg)

Magnesium chloride

Inorganic salt: MgCl2 and its hydrates

Magnesium citrate

Chemical compound

Magnesium diglutamate

Chemical compound

Magnesium hydroxide

Chemical compound

Magnesium oxide

Chemical compound naturally occurring as periclase

Magnesium sulfate

Chemical compound

Magnesium sulfide

Chemical compound

Maillard reaction

Chemical reaction occurring when roasting, baking, or frying

Main-group element

A set of elements consisting of Groups 1, 2 and 13 to 18 in the periodic table

Dicarboxylic acid responsible for apple acidity

Chemical compound

Chemical element with atomic number 25

Chemical compound

Mass concentration (chemistry)

Chemical term for density of a component in a mixture

Number of heavy particles in the atomic nucleus

Mass spectrometry

Analytical technique based on determining mass to charge ratio of ions

Net movement of mass from one location, usually meaning a stream, phase, fraction or component, to another

Materials science

Research of materials

Medicinal chemistry

Scientific branch of pharmaceutical chemistry

Chemical element 109

Chemical element with atomic number 101 (Md)

Organic compound used as flavouring and for analgesic properties

Organomercuric antiseptic for external use on minor cuts

Mercury (element)

Chemical element with atomic number 80

Mercury sulfide

Chemical compound

An optically inactive isomer that has two or more stereocenters

Metallic bonding

Type of chemical bond in metals

Chemical element with relatively weak metallic and nonmetallic properties

Simplest alcohol

Methyl salicylate

Chemical compound

Organic chemical compound

A substance used as a blue dye or stain and as a medication

Microfiltration

Physical process where a fluid is passed through a special pore-sized membrane

A device in which chemical reactions take place in a confinement with typical lateral dimensions below 1 mm

Microscopic reversibility

Microwave spectroscopy

Spectroscopy method employing microwaves

Acid derived from inorganic compounds

Pyrophoric metal alloy of lanthanides

Mixing (process engineering)

Process of mechanically stirring a heterogeneous mixture to homogenize it

Substance formed when two or more constituents are physically combined together

Modern valence bond theory

Molecular geometry

Study of the 3D shapes of molecules

Molecular graphics

Computer graphics

Molecular model

Physical model that represents molecules and their processes

Molecular modelling

Discovering chemical properties by physical simulations

Molecular self-assembly

Molecules adopt a defined arrangement without guidance or management from an outside source

Electrically neutral group of two or more atoms

Chemical element with atomic number 42

Monoammonium glutamate

Chemical compound

Molecule that, as a unit, binds chemically or supramolecularly to other molecules to form a supramolecular polymer

Monopotassium glutamate

Chemical compound

Monosodium citrate

Chemical compound

Monosodium glutamate

Chemical compound, flavor enhancer

Chemical element 115

Membrane filtration process

Flammable liquid hydrocarbon mixture

Chemical compound

Metal that is found in its metallic form, either pure or as an alloy, in nature

Natural product

Chemical compound or substance produced by a living organism, found in nature

Chemical element with atomic number 60

Chemical element with atomic number 10

Class of chemical compounds

Chemical element with atomic number 93

Nernst equation

Physical law in electrochemistry

Network covalent bonding

Chemical substance whose atoms are bonded by covalent bonds in a continuous network extending throughout the material

Newman projection

Method of representing the conformation of a single molecular bond

Hazard symbol used by emergency personnel to identify the risks posed by hazardous materials

Chemical element with atomic number of 28

Chemical element 113

Chemical element with atomic number 41

Type of ion, commonly found in explosives and fertilisers

Highly corrosive mineral acid

Colorless gas with the formula NO

Chemical compound containing nitrogen in a formal oxidation state of −3

Portemanteau name for nitrite derivatives

Highly flammable compound

Chemical element with atomic number 7

Nitrogen dioxide

Chemical compound

Nitrogen trifluoride

Chemical compound

Chemical compound

Colourless non-flammable gas

Chemical element 102

A group of low-reactive, gaseous chemical elements

Noble gas compound

Any chemical compound having at least one atom of a noble gas

Metallic elements that are nearly chemically inert

Chemical element that mostly lacks the characteristics of a metal

Non-nucleophilic base

Organic base which accepts protons but complexes poorly with larger electrophiles

Non-stoichiometric compound

Crystallography

Nuclear chemistry

Branch of chemistry dealing with radioactivity, transmutation and other nuclear processes

Chemical species that donates an electron pair

Nucleophilic addition

Addition reaction where a chemical compound with an electron-deficient or electrophilic double or triple bond, a π bond,reacts with electron-rich reactant (nucleophile),with disappearance of the double bond and creation of two new single, or σ, bonds

Nucleophilic aromatic substitution

Substitution reaction in organic chemistry

Nucleophilic substitution

Class of chemical reactions

Count per volume

Concept of New York and London as twin cities

Octahedral molecular geometry

Molecular geometry

Standard measure of the performance of an engine or aviation fuel

Chemical compound

Chemical rule of thumblets

Chemical element with atomic number 118 (Og)

Viscous water-insoluble liquid

Olefin metathesis

Redistribution of olefinic (alkene) bonds

Substance composed of oligomer molecules

One-pot synthesis

Open-chain compound

Type of organic molecule with a linear structure

Orbital hybridisation

Mixing (superposition) of atomic orbitals in chemistry

Any organic compound with an acid group (e.g. carboxyl group, sulfo group)

Organic chemistry

Subdiscipline of chemistry

Organic compound

Chemical compound that contains carbon (except for several compounds traditionally classified as inorganic compounds)

Organic reaction

Chemical reactions involving organic compounds

Organic synthesis

Chemical construction of organic compounds

Organochlorine chemistry

Organic compound containing at least one covalent carbon-chlorine bond

Organometallic chemistry

Study of organic compounds containing metal(s)

Organophosphorus chemistry

Organic compound with at least one covalent carbon–phosphorus bond

Organosilicon chemistry

Organometallic compound containing carbon–silicon bonds

Organosulfur chemistry

Organic compounds that contain sulfur

Chemical element with atomic number 76 (Os)

Osmium tetroxide

Chemical compound

Osmotic pressure

Measure of the tendency of a solution to take in pure solvent by osmosis

The simplest dicarboxylic acid

Oxidation state

Number that describes the degree of oxidation of an atom in a chemical compound; the hypothetical charge that an atom would have if all bonds to atoms of different elements were fully ionic

Chemical compound with at least one oxygen atom

Oxidizing agent

Chemical compound used to oxidize another substance in a chemical reaction

Anion composed of oxygen and of one other chemical element

Oxygen difluoride

Chemical compound

Oxygen XML Editor

Multi-platform XML editor, XSLT/XQuery debugger and profiler

Allotrope of oxygen (O₃) present in Earth's atmosphere

Chemical element with atomic number 46 (Pd)

Soft colorless solid derived from petroleum, coal or shale oil

Molecule made of a main-group element bound to hydrogen

Group of atoms offshooting from a long molecule's backbone chain

Ion, and compounds containing the ion

Perchloric acid

Chemical compound

Pericyclic reaction

Class of chemical reactions

Period (periodic table)

A method of visualizing the relationship between elements

Period 1 element

Element in first row of periodic table

Period 2 element

Any of the chemical elements in the second row of the periodic table

Period 3 element

Third row of the periodic table

Period 4 element

Fourth row in the periodic table of chemical elements

Period 5 element

Fifth row of the periodic table

Period 6 element

Row 6 of the periodic table

Period 7 element

Any element in row 7 of the periodic table

Periodic trends

Specific recurring patterns that are present in the modern periodic table

Chemical compound

Chemical compound

Naturally occurring combustible liquid

Petroleum jelly

Chemical substance used as lubricating agent

Malleable metal alloy

Measure of the acidity or basicity of an aqueous solution

Halochromic chemical compound added in small amounts to a solution so the pH of the solution can be determined visually

Phase separation

The creation of two distinct phases from a single homogeneous mixture

Hexagonal crystal form of ordinary ice or frozen water

Metastable cubic crystalline variant of ice

Trigonal phase of ice

Tetragonal form of ice

Tetragonal form of ice

Cubic crystalline form of ice

Tetragonal form of ice

Tetragonal form of ice

States of matter for water as a solid

Metastable tetragonal for of ice

Triclinic phase of ice

Cubic phase of ice

Chemical compound

Phenol formaldehyde resin

Chemical compound

Phenolphthalein

Chemical compound

Phenylpropanoid

Any organic aromatic compound with a structure based on a phenylpropane skeleton

Chemical compound

Chemical compound hydrogen phosphide

Phosphite (ion)

Phosphoric acid

Chemical compound

Chemical element with atomic number 15 (P)

Sub-discipline of chemistry

Physical chemistry

Physics applied to chemical systems

Process in which the electronic structure of the atom or molecule is barely perturbed upon adsorption

Type of chemical bond

Chemical compound

Chemical compound

Chemical element with atomic number 78

Six noble, precious metallic elements clustered together in the periodic table

Plug flow reactor model

Reactor simulation model

Chemical element with atomic number 94

Group 15 elements of the periodic table with valency 5

Pnictogen hydride

BInary compounds of hydrogen

Type of voltammetry

Chemical element with atomic number 84

Polonium hydride

Chemical compound

Poly(methyl methacrylate)

Transparent thermoplastic, commonly called acrylic

Polyacrylonitrile

Chemical compound

Molecular chemical ion

Family of polymers

Polycyclic aromatic hydrocarbon

Hydrocarbon composed of multiple aromatic rings

Most common plastic

Polyethylene glycol

Chemical compound

Polyethylene terephthalate

Synthetic polymers

Substance composed of macromolecules with repeating structural units

Polymer backbone

Series of covalently bounded atoms

Polymer chemistry

Chemistry subdiscipline

Chemical reaction to form polymer chains

Alcohol containing multiple hydroxyl groups

Class of chemical compounds

Thermoplastic polymer

Polypropylene glycol

Polymer resin widely used in packaging

Class of compounds

Class of compound containing chains of sulfur atoms

Polytetrafluoroethylene

Synthetic polymer

Polymer composed of a chain of organic units joined by carbamate (urethane) links

Polyvinyl acetate

Chemical compound

Polyvinyl alcohol

Chemical compound

Polyvinyl chloride

Common synthetic polymer

Any organic compound with alternating C–C and C≡C bonds

Post-transition metal

Category of metallic elements

Chemical element with atomic number 19 (K)

Potassium acetate

Chemical compound

Chemical compound

Potassium bitartrate

Chemical compound

Potassium bromide

Chemical compound

Potassium chloride

Chemical compound

Potassium chromate

Chemical compound

Potassium citrate

Chemical compound

Potassium cyanide

Chemical compound

Potassium dichromate

Chemical compound

Potassium ferricyanide

Chemical compound

Potassium ferrocyanide

Chemical compound

Potassium hydride

Chemical compound

Potassium hydroxide

Inorganic compound with the formula KOH

Potassium iodide

Chemical compound –

Potassium manganate

Chemical compound

Potassium nitrate

Chemical compound

Potassium oxide

Chemical compound

Potassium perchlorate

Chemical compound

Potassium permanganate

Chemical compound

Potassium peroxide

Chemical compound

Potassium sulfide

Chemical compound

Potassium superoxide

Chemical compound

Radioactive isotope of potassium

Chemical element with atomic number 59

Precious metal (disambiguation)

Topics referred to by the same term

Precipitation (chemistry)

Chemical process leading to the settling of an insoluble solid from a solution

Pre-exponential factor

Pre-exponential constant in the Arrhenius equation in Chemical Kinetics

In chemical engineering, the choice and sequencing of units for desired physical and/or chemical transformation of materials

Product (chemistry)

Species formed from chemical reactions

Chemical element with atomic number 61 (Pm)

Hydrocarbon compound

Properties of water

Physical and chemical properties of pure water

Chemical compound (CH₃CH=CH₂)

Propylene carbonate

Chemical compound

Chemical element with atomic number 91 (Pa)

Addition of a proton to an atom, molecule, or ion, forming the conjugate acid

Prussian blue (disambiguation)

Topics referred to by the same term

Water treated to remove all dissolved salts, neutral solutes and colloidal impurities in suspension and containing only H2O molecules

Chemical compound

Foul-smelling organic chemical compound produced by the breakdown of amino acids

Heterocyclic aromatic organic compound

Aromatic compound (C4H4N2)

Thermal decomposition of materials at elevated temperatures in an inert atmosphere

Qualitative inorganic analysis

Method of analytical chemistry

Quantitative analysis (chemistry)

Analysis which determines the quantity or number of something

Quantum chemistry

Chemistry based on quantum physics

Quaternary ammonium cation

Polyatomic ions of the form N(–R)₄ (charge +1)

Racemic mixture

Mixture with equal amounts of left- and right-handed enantiomers of a chiral molecule

Converting of an enantiomerically pure mixture into a mixture where more than one of the enantiomers are present

Radical (chemistry)

Atom, molecule, or ion that has an unpaired valence electron; typically highly reactive

Radical polymerization

Polymerization process involving free radicals as repeating units

Radioanalytical chemistry

Chemical element with atomic number 88

Chemical element with atomic number 86

Raman spectroscopy

Spectroscopic technique used to observe vibrational, rotational, and other low-frequency modes in a system

Random column packing

Rare-earth barium copper oxide

Chemical compounds known for exhibiting high temperature superconductivity

Rare-earth element

Any of the fifteen lanthanides plus scandium and yttrium

Equation linking reaction rate with concentrations of reactants in a chemical reaction

Rate-determining step

Slowest step of a chemical reaction

Reaction coordinate

Abstract coordinate depicting chemical reaction progress

Reaction intermediate

Molecular entity formed as an elementary step in a multi-step chemical reaction

Reaction mechanism

Any model explaining a chemical reaction

Reaction quotient

Function of the activities or concentrations of the chemical species involved in a chemical reaction

For a reactant or product in a particular reaction is intuitively defined as how quickly or slowly a reaction takes place

Reaction rate constant

Quantifies the rate of a chemical reaction

Reactivity (chemistry)

Impetus for which a chemical substance undergoes a chemical reaction, either by itself or with other materials, with an overall release of energy

Reactivity series

Analytical progression of a series of metals arranged by their reactivity in descending order

Substance added to a system to cause a chemical reaction

Rearrangement reaction

Chemical reaction where a molecule is turned into a structural isomer of itself

Recrystallization (chemistry)

Separation and purification process of crystalline solids

Chemical reaction in which oxidation states of atoms are changed

Redox indicator

Indicator which undergoes a definite color change at a specific electrode potential

Element or compound that loses (or "donates") an electron to another chemical species in a redox chemical reaction

Reduction potential

Measure of tendency of a substance to gain or lose electrons

Regulation of chemicals

Regulates the handling of hazardous materials

Relative atomic mass

Type of atomic measurement

Solid or highly viscous substance

Resonance (chemistry)

Chemistry term; way of describing bonding in molecules or ions by the combination of several contributing structures into a resonance hybrid in valence bond theory

Retrosynthetic analysis

Technique for solving problems in the planning of organic syntheses

Reverse osmosis

Water purification process

Reversible reaction

Reaction where the reactants form products, which react together to give the reactants back

Chemical element with atomic number 75

Chemical element with atomic number 45

3D schematic representation of protein structure

Process in organic chemistry

Ring-opening polymerization

Polymerization of cyclic monomers into a polymer with fewer cycles

Chemical element 111

Solid form of resin

Different molecular structures formed only by rotation about single bonds

Chemical element with atomic number 37

Type of iron oxide

Chemical element with atomic number 44

Chemical element 104

Safety data sheet

System for cataloging information, potential hazards and instructions for safe use associated with a material or product

Chemical compound

Salt (chemistry)

Ionic compound composed of cations and anions

Laboratory device in electrochemistry

Salt metathesis reaction

Chemical reaction involving exchange of bonds between four species or functional groups

Chemical element with atomic number 62 (Sm)

Chemical element with atomic number 21

Medication against nausea

Chemical element 106

Tendency for particles in suspension to settle down

Chemical element with atomic number 34 (Se)

Semibatch reactor

Semiheavy water

Chemical compound

Type of chemical synthesis

Separation process

Method that converts a mixture or solution into two or more distinct products

The process by which particulates settle to the bottom of a liquid and form a sediment

Spirit varnish produced from the resin secreted by lac insects on trees in the forests of India and Thailand

Chemical group attached to backbone

Strongest type of covalent chemical bond; formed by head-on overlapping between atomic orbitals.

Class of chemical compounds

Pop-culture technology convention in the U.S.

Silicon carbide

Extremely hard semiconductor containing silicon and carbon

Silicon dioxide

Main constituent of sand and 10% by mass of the earth's crust

Liquid or rubbery, heat-resistant, stable substance consisting of polymers or oligomers of siloxane with other atoms

Chemical element with atomic number 47

Chemical compound

Chemical compound

Chemical compound

Chemical compound

Chemical compound

Chemical bond between two atoms involving two valence electrons (atoms share one pair of electrons where the bond forms, therefore, a single bond is a type of covalent bond); usually a sigma bond

Oxygen with all of its electrons spin paired

Skeletal formula

Representation method in chemistry

Substitution reaction with a carbocation intermediate

A substitution reaction where bonds are broken and formed simultaneously

Topics referred to by the same term

Chemical element with atomic number 11

Chemical compound

Chemical compound

Sodium benzoate

Chemical compound

Sodium bicarbonate

Chemical compound

Sodium borohydride

Chemical compound

Sodium calcium edetate

Chemical compound

Sodium carbonate

Chemical compound

Sodium chloride

Chemical compound with formula NaCl

Sodium chromate

Chemical compound

Index of chemical compounds with the same name

Chemical compound

Sodium decavanadate

Chemical compound

Sodium dichromate

Inorganic compound

Sodium dithionite

Chemical compound

Sodium ferrocyanide

Chemical compound

Chemical compound

Sodium hydroxide

Chemical compound with formula NaOH

Sodium hypochlorite

Chemical compound

Sodium metaborate

Chemical compound

Sodium metavanadate

Chemical compound

Chemical compound

Chemical compound

Sodium orthovanadate

Chemical compound

Chemical compound

Sodium perchlorate

Chemical compound

Sodium permanganate

Chemical compound

Sodium peroxide

Chemical compound

Sodium silicate

Hygroscopic chemical compound of variable Na2O/SiO2 ratio precursor of waterglass

Chemical compound

Chemical compound

Sodium superoxide

Chemical compound

Sodium thiosulfate

Chemical compound

Colloidal suspension of very small solid particles in a continuous liquid medium

Alloy used to join metal pieces

Acid that does not dissolve in the reaction medium

Hydrogen in a solid state

Oxygen that is solid

Chemical solution in solid form; whose host solvent's crystal structure is not altered by the solute

Solid-state chemistry

Study of the synthesis, structure, and properties of solid phase materials

Capacity of a substance to dissolve in a solvent in a homogeneous way

Solution (chemistry)

Homogeneous mixture of a solute and a solvent

Attraction and association of molecules of a solvent with molecules or ions of a solute

Substance dissolving a solute resulting in a solution

Chemical compound

Soxhlet extractor

Laboratory apparatus

Space-filling model

Molecular model

Study involving matter and electromagnetic radiation

Method of converting liquid or slurry to powder

Variety of steel

Chemical compound

Staggered conformation

Chemical conformation of an ethane-like moiety

Stainless steel

Steel alloy resistant to corrosion

Standard atomic weight

Relative atomic mass as defined by IUPAC (CIAAW)

Standard electrode potential

Electromotive force of a half reaction cell versus standard hydrogen electrode

Standard hydrogen electrode

Reference redox electrode used under standard conditions

Steam (disambiguation)

Topics referred to by the same term

Steam distillation

Separation or extraction process for organic compounds

Stearyl alcohol

Chemical compound

Alloy of iron and carbon

Step-growth polymerization

Polymerization mechanism

Particular instance of a stereogenic element that is geometrically a point

Stereoisomerism

Isomerism due to differences in the spatial arrangement of atoms without any differences in connectivity or bond multiplicity between the isomers

Geometric aspects of ions and molecules affecting their shape and reactivity

Chemical compound

Calculation of relative masses of reactants and products in chemical reactions

Strain (chemistry)

Stripping (chemistry)

Separation process where one or more components are removed from a liquid stream by a vapor stream

Structural formula

Graphic representation of a molecular structure

Structural isomer

Compound whose molecule has the same number of atoms of each element

Poisonous substance used as pesticide

Atom set which has replaced hydrogen atoms on a hydrocarbon's parent chain

Substitution reaction

Chemical reaction during which one functional group in a chemical compound is replaced by another functional group

Substrate (chemistry)

Molecule upon which an enzyme acts

Suction filtration

Fast filtration technique

Organic compounds

Oxyanion with a central atom of sulfur surrounded by 4 oxygen atoms

Ion, and compounds containing the ion

Salt or ester of sulfurous acid

Chemical compounds made by an alkyl or aryl group attached to a sulfonyl hydroxide group

Chemical element with atomic number 16

Chemical compound of sulfur and oxygen

Sulfur hexafluoride

Sulfur trioxide

Chemical compound

Chemical compound

Acid with an acidity greater than that of 100% pure sulfuric acid

Compound with very high basicity

Superfluid helium-4

Superfluid form of the helium-4 isotope

Superheavy element

Chemical elements with atomic numbers from 104 to 120

Any chemical compound having a superoxide anion

Supramolecular chemistry

Domain of chemistry beyond that of molecules that focuses on the chemical systems made up of a discrete number of assembled molecular subunits or components

Surface science

Study of physical and chemical phenomena that occur at the interface of two phases

Suspension (chemistry)

Heterogeneous mixture of solid particles dispersed in a medium

Fossil fuel derived from other hydrocarbon sources

Synthetic element

Chemical elements that do not occur naturally

Systematic element name

Temporary name assigned to predicted chemical elements

Chemical compound

Class of astringent, bitter plant polyphenolic chemical compounds

Chemical element with atomic number 73

Corrosion on outer layer of some metals

Organic acid found in many fruits

Biologically significant aminosulfonic acid

Structural isomers of chemical compounds that readily interconvert

Chemical element with atomic number 43 (Tc)

Metastable nuclear isomer of technetium-99

Chemical element with atomic number 52 (Te)

Template Attribute Language

Template language

Synthetic radioactive chemical element with atomic number 117 and symbol Ts

Chemical element with atomic number 65

Class of oily organic compounds found in plants

Class of aromatic organic chemicals found in plants

Chemical compound added to gasoline/petrol

Tetrahedral molecular geometry

Central atom with four substituents located at the corners of a tetrahedron

Tetrahydrofuran

Chemical compound

4-atom allotrope of oxygen

Tetrasodium EDTA

Chemical compound

Chemical element with atomic number 81

Bitter alkaloid of the cacao plant

Theoretical chemistry

Theoretical plate

Thermal decomposition

Chemical decomposition caused by heat

Thermal runaway

Situation where an increase in temperature causes a further increase in temperature

Thermochemistry

Study of the heat energy associated with chemical reactions and/or physical transformations

Thermodynamic activity

Measure of the effective concentration of a species in a mixture

Thermogravimetric analysis

Method of thermal analysis in which the mass of a sample is measured over time as the temperature changes

Thin-layer chromatography

A chromatography technique used to separate non-volatile mixtures

Any organic compound having a sulfanyl group

Organomercury antiseptic and antifungal agent

Chemical compound

Chemical element with atomic number 90

Chemical element with atomic number 69

Chemical compound found in plants including thyme

Topics referred to by the same term

Chemical compound known as stannic oxide, cassiterite and tin ore

Tincture of iodine

Antiseptic solution rubbed on skin before surgical operations

Chemical element with atomic number 22

Titanium dioxide

Chemical compound

Titanium nitride

Chemical compound

Laboratory method for determining the concentration of an analyte

Impact-resistant high explosive

Chemical compound

Any of various steels that are particularly well-suited to be made into tools and tooling

Total synthesis

The complete organic synthesis of complex organic compounds, usually without the aid of biological processes

Toxic heavy metal

Category of substances

Transition metal

Series of chemical elements

Transition state

Configuration of a chemical reaction when potential energy is greatest

Transition state theory

Scientific theory

Transuranium element

Element whose atomic number is greater than 92

Chemical compound

Trigonal planar molecular geometry

Molecular geometry of symmetry D_3h

Trigonal pyramidal molecular geometry

Chemical bond involving six bonding electrons; one sigma plus two pi bonds

Triplet state of the dioxygen molecule

Trisodium citrate

Chemical compound

Trisodium phosphate

Chemical compound

Tritiated water

Radioactive form of water in which the usual protium atoms are replaced with tritium

Isotope of hydrogen with 2 neutrons

Nonsystematic name for a chemical substance

Chemical element with atomic number 74

Tungsten carbide

Chemical compound

Chemical compound

Ultrafast laser spectroscopy

Spectroscopy with lasers with very short pulses

Ultrafiltration

Filtration by force through a semipermeable membrane

Ultraviolet–visible spectroscopy

Range of spectroscopic analysis

Chemical element, symbol Ubb and atomic number 122

Chemical element, symbol Ubh and atomic number 126

Chemical element, symbol Ubn and atomic number 120

Chemical element, symbol Ubq and atomic number 124

Chemical element, symbol Ubu and atomic number 121

Basic step in a process, involving a physical change or chemical transformation such as separation, crystallization, evaporation, filtration, polymerization, isomerization, and other reactions

Chemical element, symbol Uue and atomic number 119

Chemical element with atomic number 92

Uranium hexafluoride

Chemical compound

Isotope of uranium

Isotope of uranium

Organic compound

End product of nucleic acid degradation

Vacuum distillation

Distillation performed under reduced pressure, which allows the purification of compounds not readily distilled at ambient pressures or simply to save time or energy

Treatment to dry materials using vaccuum

Valence bond theory

One of two foundational theories of quantum chemistry

Van Deemter equation

Relation in chromatography

Van der Waals force

Weak attractive or repulsive forces between molecules or atomic groups that do not arise from covalent bonds nor ionic bonds

Coordination complex of vanadium

Chemical element with atomic number 23

Chemical compound

Pressure exerted by a vapor in thermodynamic equilibrium

Vapor–liquid separator

A device used in several industrial applications to separate a vapor–liquid mixture.

Green copper-based pigment

Vicinal (chemistry)

Stands for any two functional groups bonded to two adjacent atoms

Index of chemical compounds with the same name

Set of electroanalytical methods

Theoretical model used in chemistry

Chemical compound with formula H2O

Gaseous phase of water

Water–gas shift reaction

Chemical reaction

Wax (disambiguation)

Topics referred to by the same term

Type of laboratory

Petroleum-derived clear, transparent liquid

Wittig reaction

Chemical reaction

Residue powder left after the combustion of wood

Type of crucible steel

Workplace Hazardous Materials Information System

Canadian national hazard communication standard

Iron alloy with a very low carbon content

Chemical compound

Dark matter research project

Xenon hexafluoroplatinate

Chemical compound

Xenon tetrafluoride

Chemical compound

X-ray spectroscopy

Characterization technique

Chemical compound

Yield (chemistry)

Is a measure of a quantity of moles of a product formed in a chemical reaction

Chemical element with atomic number 70

Chemical element with atomic number 39 (Y)

Yttrium barium copper oxide

Chemical compound

Chemical element with atomic number 30

Chemical compound

Chemical compound

ZnO is a white powder insoluble in water

Chemical compound

Chemical compound

Chemical compound

Chemical element with atomic number 40

Zirconium dioxide

Chemical compound

Class of molecular chemical compounds with localized ionic charges