1. Families of Elements

2. Alkali Metals

3. Group 1 on the periodic table

4. Alkali Metals Group 1 on the periodic table One valence electron

5. Alkali Metals Group 1 on the periodic table One valence electron Most reactive metals

6. Alkali Metals Group 1 on the periodic table One valence electron Most reactive metals Low melting and boiling points make them soft

7. Alkali Metals Group 1 on the periodic table One valence electron Most reactive metals Low melting and boiling points make them soft Not found in their pure state in nature

8. Alkali Metals Group 1 on the periodic table One valence electron Most reactive metals Low melting and boiling points make them soft Not found in their pure state in nature React with water to form basic (alkaline) solutions

9. Alkali Metals Group 1 on the periodic table One valence electron Most reactive metals Low melting and boiling points make them soft Not found in their pure state in nature React with water to form basic (alkaline) solutions Compounds are white, solutions are colorless

10. Alkaline Earth Metals

11. Group 2 on the periodic table

12. Alkaline Earth Metals Group 2 on the periodic table Two valence electrons

13. Alkaline Earth Metals Group 2 on the periodic table Two valence electrons Very reactive, but less reactive than group 1

14. Alkaline Earth Metals Group 2 on the periodic table Two valence electrons Very reactive, but less reactive than group 1 Higher melting and boiling points than group 1

15. Alkaline Earth Metals Group 2 on the periodic table Two valence electrons Very reactive, but less reactive than group 1 Higher melting and boiling points than group 1 Soft, but harder than group 1

16. Alkaline Earth Metals Group 2 on the periodic table Two valence electrons Very reactive, but less reactive than group 1 Higher melting and boiling points than group 1 Soft, but harder than group 1 Not found in their pure state in nature

17. Alkaline Earth Metals Group 2 on the periodic table Two valence electrons Very reactive, but less reactive than group 1 Higher melting and boiling points than group 1 Soft, but harder than group 1 Not found in their pure state in nature React with water to form basic (alkaline) solutions

18. Alkaline Earth Metals Group 2 on the periodic table Two valence electrons Very reactive, but less reactive than group 1 Higher melting and boiling points than group 1 Soft, but harder than group 1 Not found in their pure state in nature React with water to form basic (alkaline) solutions Compounds are white, solutions are colorless

19. Transition Metals

20. Groups 3-12 on the periodic table

21. Transition Metals Groups 3-12 on the periodic table Number of valence electrons vary (usually 1-4)

22. Transition Metals Groups 3-12 on the periodic table Number of valence electrons vary (usually 1-4) Less reactive and harder than other metals

23. Transition Metals Groups 3-12 on the periodic table Number of valence electrons vary (usually 1-4) Less reactive and harder than other metals Compounds are colored (except for Zn and Ag)

24. Transition Metals Groups 3-12 on the periodic table Number of valence electrons vary (usually 1-4) Less reactive and harder than other metals Compounds are colored (except for Zn and Ag) Can be found in their pure form in nature

25. Transition Metals Groups 3-12 on the periodic table Number of valence electrons vary (usually 1-4) Less reactive and harder than other metals Compounds are colored (except for Zn and Ag) Can be found in their pure form in nature Higher melting and boiling points than other metals

26. Transition Metals Groups 3-12 on the periodic table Number of valence electrons vary (usually 1-4) Less reactive and harder than other metals Compounds are colored (except for Zn and Ag) Can be found in their pure form in nature Higher melting and boiling points than other metals Mercury is the only metal that is liquid at room temperature

27. Rare Earth Metals Two rows at the very bottom of the periodic table.

28. Rare Earth Metals Two rows at the very bottom of the periodic table. Due to their large size, most of these elements are radioactive.

29. Rare Earth Metals Two rows at the very bottom of the periodic table. Due to their large size, most of these elements are radioactive. Typically not found in a lot of compounds, although it is possible.

30. Halogens

31. Group 17 on the periodic table

32. Halogens Group 17 on the periodic table Seven valence electrons

33. Halogens Group 17 on the periodic table Seven valence electrons Most reactive nonmetals

34. Halogens Group 17 on the periodic table Seven valence electrons Most reactive nonmetals Can be solid (I, At), liquid (Br), or gas (F, Cl) at room temperature

35. Halogens Group 17 on the periodic table Seven valence electrons Most reactive nonmetals Can be solid (I, At), liquid (Br), or gas (F, Cl) at room temperature Solids are brittle, not malleable

36. Noble Gases

37. Group 18 on the periodic table

38. Noble Gases Group 18 on the periodic table Eight valence electrons (2 for He)

39. Noble Gases Group 18 on the periodic table Eight valence electrons (2 for He) Do not react with other elements unless forced to

40. Noble Gases Group 18 on the periodic table Eight valence electrons (2 for He) Do not react with other elements unless forced to Typically used as a filler gas when space needs to be taken up without a reaction taking place.