1. Groups on the periodic table

2. Reading the Periodic Table
Periods – go across
Groups – go down

4. Hydrogen is not a member, it is a non-metal
ALKALI METALS
Group 1
Hydrogen is not a member, it is a non-metal
1 electron in the outer shell
Soft and silvery metals
Very reactive, esp. with water
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5. ALKALINE EARTH METALS
Group 2
2 electrons in the outer shell
White and malleable
Reactive, but less than Alkali metals

6. Good conductors of heat and electricity.
TRANSITION METALS
Groups in the middle
Good conductors of heat and electricity.
Can bond with many elements in a variety of shapes.

7. Halogens Group 17 7 electrons in the outer shell All are non-metals
Very reactive are often bonded with elements from Group 1

8. Noble Gases Group 18 Exist as gases and nonmetals
8 electrons in the outer shell = Full
Helium (He) has only 2 electrons in the outer shell = Full
Not reactive with other elements

9. Rare Earth Metals
Located at the Bottom
Some are Radioactive
The rare earths are silver, silvery-white, or gray metals.

10. Think Pair Share
How are elements grouped on the periodic table?

11. Think Pair Share How are elements grouped on the periodic table?
Answer: Elements are grouped according to their similarities.

12. Think Pair Share
Which group wants nothing to do with the other elements? Why?

13. Think Pair Share
Which group wants nothing to do with the other elements? Why?
Answer: The Noble Gases will not bond with other elements because they already have a full outer energy level (8 valence electrons).

14. Think Pair Share
What happens to the reactivity of the elements as you move from left to right across the periodic table?

15. Think Pair Share
What happens to the reactivity of the elements as you move from left to right across the periodic table?
Answer: The reactivity of the elements decreases as you move from left to right.

16. How Did You Do?
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17. Learning Scale
Level 4 – Investigate and describe the compounds formed by bonding elements. Level 3 – Describe how elements combine to form compounds. Level 2 – Use the periodic table to identify the number of protons, neutrons, or electrons in an element. Level 1 – Locate and identify elements on the periodic table.