Atoms

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molecule

A particle made of two or more atoms bonded together

element

A pure substance made of only one kind of atom

proton

A subatomic particle in the nucleus of the atom. Has a positive charge.

neutron

A subatomic particle in the nucleus of the atom. Has no charge.

nucleus

The center of the atom.

atom

The fundamental building block of all matter.

electron

The negatively (-) charged subatomic particles that orbit the nucleus of an atom.


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