1. Coloring the Periodic Table Families
NSSH Science

2. Families on the Periodic Table
Elements on the periodic table can be grouped into families bases on their chemical properties.
Each family has a specific name to differentiate it from the other families in the periodic table.
Elements in each family
react differently with
other elements.

3. Rare Earth Metals Some are Radioactive
The rare earths are silver, silvery-white, or gray metals.
Conduct electricity
Please choose your colors and color in these sections in the first periodic table on your handout.

4. Properties of Metals
Metals are good conductors of heat and electricity.
Metals are shiny.
Metals are ductile (can be stretched into thin wires).
Metals are malleable (can be pounded into thin sheets).
A chemical property of metal is its reaction with water which results in corrosion.

5. Properties of Non-Metals
Non-metals are poor conductors of heat and electricity.
Non-metals are not ductile or malleable.
Solid non-metals are brittle and break easily.
They are dull.
Many non-metals are gases.
Sulfur

6. Properties of Metalloids
Metalloids (metal-like) have properties of both metals and non-metals.
They are solids that can be shiny or dull.
They conduct heat and electricity better than non-metals but not as well as metals.
They are ductile and malleable.
Silicon

9. Families
Review the students on the following slides to see if they what they can remember about the periodic table from prior knowledge.

17. ALKALI METALS Group 1 Hydrogen is not a member, it is a non-metal
1 electron in the outer shell (valence electron)
Soft and silvery metals
Very reactive, esp. with water
Never found as free elements in nature
Conduct electricity
Image:

18. Cutting an Alkali Metal
ALKALI METALS
Lithium (Li) in Water
Sodium (Na) in Oil
Cutting an Alkali Metal
Image:

19. ALKALINE EARTH METALS Group 2 2 electrons in the outer shell
White and malleable
Reactive, but less than Alkali metals
Also not found uncombined in nature
Conduct electricity

20. Fireworks Show using Alkaline Earth Metals
Alkaline Metal Examples
Flame colors produced by Alkaline Metals

21. TRANSITION METALS Groups in the middle
Number of valence electrons can vary
Heavier metals
Good conductors of heat and electricity
High melting/boiling points
Some are used for jewelry
Highly malleable
Ductile
Can form alloys – physical mixtures of metals

22. TRANSITION METALS Bronze Alloy Tin Tin + Copper Copper Wire Silver
Please discuss malleability (ability to shape a metal) and ductility (ability to draw metals into wire).
Tin + Copper
Copper Wire
Silver

23. Rare Earth Elements (Inner Transitional Elements)
Composed of the lanthanide and actinide series.
Most of the elements in the actinide series are synthetic or man-made.

24. Most inner transitional elements are radioactive and unstable
Rare Earth Elements (Inner Transitional Elements)
Uranium Ore
Most inner transitional elements are radioactive and unstable

25. Halogens Group 17 7 electrons in the outer shell All are non-metals
Very reactive are often bonded with elements from Group 1 (form halides)
Come naturally in pairs –diatomic molecules

26. Halogens
Cl2, Br2, I2

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

28. Noble Gases
Valence Electrons