1
area where electrons are likely to be found
2
center of an atom which contains most of the mass of the atom
3
number of neutrons + number of protons
4
number of protons in an atom
5
subatomic particle found in the nucleus that has no charge
6
smallest piece of a substance that still has the properties o f that substance
7
subatomic particle with a negative charge
8
subatomic particle found in the nucleus that has a positive charge
