Launch   Grab your binder and immediately take a seat

  Silently study for the quiz

What are metals, semimetals, and

nonmetals? Mr. Heffner 9/21/09

What are semimetals?   Where are they located?

What are semimetals?   What are their properties?

  Intermediate conductivity   Electricity

  Intermediate melting point   Temperature

  Ice water @ 0°C

What are semimetals?   What are a few examples?

  Boron (B)   Silicon (Si)

What are metals?   Where are they located?

What are metals?   What are their properties?

  High conductivity   High melting point

What are metals?   What are a few examples?

  Iron (Fe)   Gold (Au)

  Aluminum (Al)

What are nonmetals?   Where are they located?

What are nonmetals?   What are their properties?

  Low conductivity   Low melting point

What are nonmetals?   What are a few examples?

  Hydrogen (H)   Oxygen (O)

  Neon (Ne)

Practice Questions 1.  Elements can be organized into what three categories?

2.  What type of elements border the heavy stepped line?

3.  Where are the metals found? The nonmetals?

4.  Besides location, how are metals different from nonmetals?

5.  Label the following as metal, semimetal, or nonmetal: C, Na, Al, Sb, H, Li, Br, Ba, Si, Hg, & Xe.

6.  Would you expect Na to have a low melting point? Why?

Exit Slip 1.  The periodic table is composed of

a.  two regions: metals and nonmetals. b.  two regions: periods and groups.

c.  three regions: metals, semimetals, and nonmetals. d.  three regions: metals, periods, and groups.

2.  The region to the right of the heavy stepped line incorporates which of the following?

a.  metals b.  nonmetals

c.  metals and nonmetals d.  all of the semimetals

Exit Slip 3.  Magnesium (Mg) is a

a.  metal and has a high melting point b.  metal and has a low melting point

c.  nonmetal and has a high melting point d.  nonmetal and has a low melting point

Exit Slip 4.  Boron is classified as a ________, meaning it has

a(n) ________ conductivity. a.  semimetal; intermediate b.  semimetal; greater c.  metal; greater

d.  nonmetal; lesser

Exit Slip 5.  What do the elements vandium (V), chromium (Cr),

gold (Ag), and silver (Au) have in common? a.  They are non-reactive (inert). b.  They are nonmetals. c.  They have the similar properties for melting point

and conductivity. d.  They have the same number of neutrons.

Homework   Finish practice questions

  Start reviewing for Monday’s Unit #2 Exam!