1. Good idea/Bad idea Why?

2. Properties of Metals, Nonmetals, and Metalloids

3. Metals are located to the left and below the diagonal line in the periodic table.

4. Properties of Metals
Metals are usually solids at room temperature

5. Mercury is the exception

6. Metals are good conductors of heat and electricity

8. High melting points and boiling points (except Hg and Ga)

9. Gallium has a melting point of only 86 F.

10. High densities (except some group 1 metals)

11. Metals have luster, they are shiny and reflect light

12. Malleable – can be bent or pounded into sheets

13. Old pennies (copper) are less malleable than new pennies (more zinc)

14. Ductile – can be stretched into wire without breaking

15. Wires on a suspension bridge are made of ductile metal

16. Chemical properties of metals
Most metals can rust

17. Chemical properties of metals
Most metals react easily with acids

18. Nonmetals are located to the right of the stair step line.

19. Properties of Nonmetals
The nonmetals exist in all three of the states of matter at room temperature:
gases (such as oxygen)
liquids (such as bromine)
solids (such as carbon)

20. Nonmetals are not able to conduct electricity or heat very well.

21. Nonmetals have much lower melting and boiling points than metals
Nonmetals have much lower melting and boiling points than metals. (Consider all of the gases on the non-metal side)

22. Nonmetals are not nearly as dense as metals.

23. The nonmetals have no metallic luster, and do not reflect light.

24. Nonmetallic elements are very brittle, and cannot be rolled into wires or pounded into sheets.
Sulfur powder

25. Hydrogen- a non metal The Group 1 Nonmetal
Most of the hydrogen found in the world is found in water.

26. Metalloids are located on the staircase line, dividing metals from non metals.

27. Properties of Metalloids
Have a mixture of metallic and nonmetallic properties.
Semi-conductors: Can conduct heat and electricity to some extent.

28. Review video of metals, nonmetals, and metalloids
5:16 length

29. Review Questions
1. Identify the following as metals, nonmetals, or metalloids using their location on the periodic table.
(a) silicon
Si- metalloid
(b) fluorine
F- nonmetal
(c) uranium
U- metal
(d) mercury
Hg- metal
(e) arsenic
As- metalloid
(f) iridium
Ir- metal

30. 2. List three differences in the physical properties between metals and nonmetals.
Metals are shiny, malleable and good conductors whereas nonmetals are dull, brittle and don’t conduct electricity (insulators).

31. 3. Using your knowledge from 6th grade, construct a working electrical circuit and make the lightbulb light up.

32. Explain how you can use this electrical circuit to test an object to determine if it is a metal or non-metal.
Where would the sample go and what would the electrical circuit do?

33. Testing for metals Names______________________ metal or non-metal
object
Evidence
Lg wood block
Rubber stopper
Al bar
Cu sheet
Zn piece
Sm wood block
tweezers 3+