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Matter & Energy 8-12

Across
A part of the atom that has a positive charge; is found in the nucleus
Change from a liquid into a gas
Two or more atoms with the same atomic number but different atomic masses
Central part of the atom, that contains neutrons & protons
Down
Smallest particle of a type of matter that has all of the same characteristics as that type of matter
Energy levels in which electrons are arranged around the nucleus
A part of the atom that has neither a positive or a negative charge; is found in the nucleus
A part of the atom that has a negative electrical charge; orbits the nucleus