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Periodic table
Science
5
Science
8th Grade
01/09/2012
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Term
Atom
 Definition
The smallest unit of matter.
Term
Molecule
 Definition
Neutral particle formed when atoms share electrons.
Term
Proton
 Definition
Positively charged part particle in the nucleus of an atom.
Term
Neutron
 Definition
Electrically neutral particle that has the same mass as a proton and is found in an atoms nucleus.
Term
Electron
 Definition
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