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.
