Science 10/7/10

Bell Question:  Draw an atom of Nitrogen.

Proton:
-positively charged
-exist in the nucleus
-have a mass of 1 Atomic Mass Unit (AMU)
- determined by the Atomic number

Electron:
-negatively charged
-exist in energy shells
-has a mass of 1/1836th of an atom
- strength of a proton

Neutron:
-neutrally charged
-has mass of 1 AMU
-exists in the nucleus

Octet Rule:
Rule of 8
1-2 electrons
2- 8 electrons
3- 8 electrons
not in 4-7 shells