Chapter 9 Lesson 3 Nonmetals & Metalloids

1. unique PLACES REGIONAL TOURISM Chapter 9 Lesson 3Nonmetals & Metalloids Breeden 2013

2. Physical Properties • Nonmetal- an element that lacks most of the properties of a metal • Poor conductors of heat and electricity • Dull or brittle when solid • Most are gas at room temp

3. Chemical Properties Nonmetals • Bond easily with other elements • Electron is gained or shared

4. Carbon Familygroup 14 • Only Carbon is a nonmetal • Used to make DNA, proteins, carbohydrates, fats, fuels, oil, diamonds, etc.

5. Nitrogen Familygroup 15 • Nitrogen & Phosphorus are only nonmetals • N2 makes up 78% of atmosphere (diatomic molecule)

6. Oxygen Familygroup 16 • Only oxygen, sulfur, and selenium are nonmetals • Oxygen combines with almost any element (oxygen is the most common element on Earth!)

7. Halogen Familygroup 17 • Halogens means “salt forming” • Fluorine, Chlorine, Bromine, Iodine are non metals • Halogens are very reactive

8. Noble Gasesgroup 18 • Mostly non-reactive • Don’t form a lot of compounds

9. Hydrogengroup 1 • Different from all other nonmetals • Most common element in universe, but not on Earth

10. Metalloids • Have properties of both metals and nonmetals • Useful in Electronics and glass

11. Quiz Monday! • Label groups/families • Know how each is different from one another • Know why each element is in same group (what properties they share; like good conductors, not reactive, very reactive, etc.)

12. Assignment • Metals & Nonmetals worksheet • Periodic Table labeling worksheet