3. + They are solid (with the exception of mercury, Hg,
a liquid).
+ Good conductors of electricity and heat.
+ They are shiny
+ They are ductile.
+ They are malleable.
4. Pure metals and there uses
Aluminium – Overhead electrical wires,
saucepans, cans, foil.
Copper – Electrical wiring.
Tin – Coating for steel food cans.
5. + A base metal (element) combined with
another element.
+ Used to improve the quality of the base metal.
+ Steel = Iron + Carbon... + chromium and nickel.
6. + Gas, liquid or solid.
+ Not malleable or ductile
+ Non-metals are brittle
+ Poor conductors of both heat and electricity
+ Tend to gain electrons in chemical reactions.
7. + Over 90% of known compounds contain carbon.
+ Carbon exists in every living thing.
+ Allotropes
– Amorphous carbon
– Diamond
– Graphite
8. + Halfway between metals and non-metals.
+ Act mostly as non-metals.
+ Semi conductors – silicon & germanium in
electrical components
9.
10. + Questions
+ 1
+ 3
+ 4
+ 6
+ 7 in the back of your book (glossary)
+ 11
+ 18
