2. Color (physical), solid (physical), Magnetic (physical), conducts Electricity (physical), insulates from Electricity (physical), burns (chemical)

3. Neutrons do not have any charge, a mass of 1.0 amu, and located in the nucleus of the atom. Protons have a positive charge, a mass of 1.0 amu, and located in the nucleus of the atom.

4. a. 1s 2 2s 2 2p 6 b. 1s 2 2s 2 2p 2 c. 1s 2 2s 2 2p 1 d. 1s 2 10 electrons = neon 8 electrons = carbon 5 electrons = boron 2 electrons = helium

5. a. lithium b. sulfur c. phosphorous d. calcium Group 1A = 1 v.e. Group 16A = 6 v.e. Group 15A = 5 v.e. Group 2A = 2 v.e.

6. e. bromine f. neon Group 17A = 7 v.e. Group 18A = 8 v.e.

7. a. Potassium, cesium, lithium, sodium b. fluorine, boron, lithium, carbon, neon Cesium, potassium, sodium, lithium Lithium, boron, carbon, fluorine, neon

8. a. Cs and Li b. Sr and I c. S and Mg d. O and Se Lithium Iodine Sulfur Oxygen

9. e. Te and N f. C and F Nitrogen Fluorine

11. 1s 2 2s 2 2p 6 Anions include nitride (-3), oxide (-2), fluoride (-1) 10 electrons = neon Cations include sodium ion (+1) magnesium ion (+2) & aluminum ion (+3)