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Substance

Allotropy
Property of some chemical elements to exist in two or more different forms
Amount of substance
Extensive physical property
Avogadro constant
Fundamental metric system constant defined as the number of particles per mole
Ball-and-stick model
Molecular model
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 element
A species of atoms having the same number of protons in the atomic nucleus
Chemical formula
Compact notation for chemical compounds
Chemical substance
Form of matter
Congener (chemistry)
Related chemicals
Cyclic compound
Molecule with a ring of bonded atoms
Diatomic molecule
Molecule composed of only two atoms of the same or different chemical elements
Empirical formula
Formula which tells relative ratio of different atoms in a compound
Inorganic compound
Chemical compound without any carbon-hydrogen bonds
Isomer
Molecule with identical atomic composition as another, but with different structures or orientations
Lewis structure
Diagrams for the bonding between atoms of a molecule and lone pairs of electrons
Molecular graphics
Computer graphics
Molecular model
Physical model that represents molecules and their processes
Molecule
Electrically neutral group of two or more atoms
Natural product
Chemical compound or substance produced by a living organism, found in nature
Open-chain compound
Type of organic molecule with a linear structure
Organic compound
Chemical compound that contains carbon (except for several compounds traditionally classified as inorganic compounds)
Ribbon diagram
3D schematic representation of protein structure
Space-filling model
Molecular model
Structural formula
Graphic representation of a molecular structure
Structural isomer
Compound whose molecule has the same number of atoms of each element
Tautomer
Structural isomers of chemical compounds that readily interconvert