1. (8th) Chapter 4-4 Cornell Notes “Nonmetals, Inert gases, and Semimetals”

2. (8th) Chapter 4-4 Cornell Notes Key Questions How are semimetals useful? A. ______________ What are the properties of nonmetals and inert gases? A. _________________

4. (8th) Chapter 4-4 Cornell Notes Key Terms nonmetal diatomic molecule halogen inert gas semiconductor semimetal

6. (8th) Chapter 4-4 Cornell Notes Paragraph 1 nonmetal properties: poor conductors electricity/heat; dull and brittle; lower densities than most metals. 1.511 × 511 - en.wikipedia.org511 × 511 - en.wikipedia.org

7. (8th) Chapter 4-4 Cornell Notes many metals/nonmetals react w/ each other; electrons move from metals to nonmetals. Paragraph 2

8. (8th) Chapter 4-4 Cornell Notes Group 14 (carbon family), interact w/ 4 electrons; only nonmetal, primary role in life chemistry. Paragraph 3

9. (8th) Chapter 4-4 Cornell Notes Group 15 nitrogen family, ; 2 nonmetals: nitrogen, phosphorus; share 3 electrons; Nitrogen diatomic molecule (2 atom molecule). Paragraph 4

10. (8th) Chapter 4-4 Cornell Notes Group 16 oxygen family, interact w/ 2 electrons ; 3 nonmetals: oxygen, sulfur, selenium. Paragraph 5

11. (8th) Chapter 4-4 Cornell Notes Group 17 halogens, all but one nonmetals; all but one nonmetals; very reactive in nature. Paragraph 6

12. (8th) Chapter 4-4 Cornell Notes Group 18 inert gases: don’t form compounds; don‘t interact w/ electrons, generally nonreactive. Paragraph 7

13. (8th) Chapter 4-4 Cornell Notes Hydrogen simplest/smallest atoms ; properties so different doesn’t belong to any family. Paragraph 8

14. (8th) Chapter 4-4 Cornell Notes semimetals (7 in all); characteristics both nonmetals/metals; most useful property is conducting electricity (variable), makes semiconductors; semiconductors conduct electricity variously w/ conditions. Paragraph 9