1. Groups on the Periodic Table
Back of page 17 and page 18

2. Alkali Metals
Group number – 1 Properties- Examples- Reactivity- Valence Electrons- Uses-
Soft, tarnish rapidly, low melting point, low density, violently react, silver, conductors
Lithium, sodium, potassium, rubidium, cesium, francium
React violently, very reactive 1
Aircrafts, salt, batteries, explosives

3. Alkaline Metals Group number – 2 Properties- Examples- Reactivity-
Valence Electrons-
Uses-
Solid
Calcium, magnesium,
Very reactive metals 2
Bones, teeth, light weight metals for bikes/airplanes

4. Halogens Group number – 17 Properties- Examples- Reactivity-
Valence Electrons-
Uses-
Non metal
Diatomic – Cl2, Br2
Helium, argon, neon, xenon, krypton
Very reactive non metals 7
Used to kill bacteria/germs

5. Noble Gases Group number – 18 Properties- Examples- Reactivity-
Valence Electrons-
Uses-
Gases, non metals
Helium, argon, neon, xenon, krypton
Not reactive 8
Balloons, lights

6. Transition Metals Group number – 3-12 Properties- Examples-
Reactivity-
Valence Electrons-
Uses-
Great conductors, high melting point, hard
Copper, silver, gold, titanium
Less reactive than most metals
1,2
Coins, jewelry

7. 1 e 8e 2e 3e
4 e 5e 6e 7e

8. How many electrons in the outside shell?
Which group is this element found in?
This is a Bohr model of what element?
Group 17 - Halogens
Which elements have things in common with this element?
Iodine, Bromine, flourine