Basic Chemistry Terms

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atom

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The smallest unit of a chemical element.

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molecule

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A group of atoms bonded together.

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compound

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A substance formed when two or more different elements are chemically bonded.

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ion

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An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

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element

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A pure substance that cannot be broken down into simpler substances by chemical method.

We have 118 elements on periodic table.

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chemical

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(adj.)Relating to chemistry or the interactions of substances.

(n.) a compound or substance

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matter

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Anything that has mass and takes up space.

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substance

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any specific type of matter. Usually used interchangablly with the word "matter".

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particle

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one of the very small parts of matter (as a molecule, atom, or electron)

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proton

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A positively charged particle found in the nucleus of an atom.