Match the terms to their descriptions. proton

neutron

electron

electron cloud

valence electron

valence shell

isotopes
Descriptions: 1. (Atoms that have the same number of protons but different numbers of neutrons.) 2.( Outermost energy level.) 3.(Region outside the nucleus divided into energy levels) 4.(Located outside the nuecleus, negitive (-) charge.) 5.(Located in the nucleus, neutral or no charge.) 6.(Located in the nucleus, positive (+) charge.) 7.(Located in the outermost energy level, determines how element will react chemically with other elements.)