Chemistry Unit Vocabulary June 25

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Proton

Back

A subatomic particle found in the nucleus of an atom, with a positive electric charge.

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Neutron

Back

A subatomic particle found in the nucleus of an atom, with no electric charge.

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Electron

Back

A subatomic particle with a negative electric charge, found in the electron cloud surrounding the nucleus.

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Atom

Back

The smallest unit of an element, consisting of protons, neutrons, and electrons.

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Molecule

Back

A group of atoms bonded together, representing the smallest unit of a chemical compound.

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Element

Back

A pure substance consisting of only one type of atom.

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Compound

Back

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

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Coefficient

Back

A number placed in front of a chemical formula to indicate how many molecules or atoms are present

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Subscript

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A number written at the lower right corner behind the symbol of an element, indicating the number of atoms of the element in a molecule.

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Malleable

Back

ability to be hammered, pressed, or rolled into thin sheets without breaking.