Chemistry

April Lawrence

20 May, 07:01

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.)