Introduction to Chemistry Vocabulary

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Atom

Back

Smallest unit of an element

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Molecule

Back

Two or more atoms bonded together

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Element

Back

Pure substance of one type of atom

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Compound

Back

Substance with two or more elements chemically combined

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Mixture

Back

Combination of two or more substances not chemically bonded

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Chemical Bond

Back

Force holding atoms together in a molecule

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Ionic Bond

Back

Transfer of electrons between atoms

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Covalent Bond

Back

Sharing of electrons between atoms

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Chemical Reaction

Back

Process of rearranging atoms in substances

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Reactants

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Substances present before a chemical reaction