Unit 3: Chemistry. Metal/ Non Metal/ Metalloid.
Bell Ringer
Unit 3: Chemistry. Metal/ Non Metal/ Metalloid.
Metals
Metalloids
Non-Metals
Shiny / Luster
• Good conductors
• Malleable (easily
shaped)
• Ductile (can be
stretched into wire)
• Usually solid at room
temperature
Examples: Iron, Copper,
Tin, titanium
Have properties of both
metals and non-metals.
•
Semiconductors
•
Some are shiny, some are dull
•
Somewhat malleable &
ductile.
Examples: Boron, Silicon, Antimony
• Dull
• Poor conductors
• Brittle / unmalleable
• Often a gas at room
temp.
Examples: Neon, Carbon,
Sulfur, Bromine
•
•
We refer to these as CLASSES of elements
Unit 3: Chemistry. Metal/ Non Metal/ Metalloid.
Unit 3: Chemistry. Metal/ Non Metal/ Metalloid.
LET’S TRY
What class is Germanium?
Metalloid
Unit 3: Chemistry. Metal/ Non Metal/ Metalloid.
LET’S TRY
What class is Mercury?
Metal
Unit 3: Chemistry. Metal/ Non Metal/ Metalloid.
LET’S TRY
What class is Hydrogen?
Non Metal
Unit 3: Chemistry. Metal/ Non Metal/ Metalloid.
LET’S TRY
Which class of elements are also called
semiconductors?
a.
b.
nonmetals
noble gases
c. metals
d. metalloids
d. metalloids
Unit 3: Chemistry. Metal/ Non Metal/ Metalloid.
LET’S TRY
One property of most nonmetals is that they are
a.
b.
c.
d.
flattened when hit with a hammer.
poor conductors of electric current.
solids at room temperature.
shiny.
b. poor conductors of electric current.