This document discusses the properties and uses of metals, alloys, and other materials. Metals are good conductors of heat and electricity, are shiny, ductile, and malleable. Common metals and their uses include aluminum for overhead wires and cans, and copper for electrical wiring. Alloys are mixtures of metals that improve qualities; steel is an alloy of iron and carbon. Non-metals are brittle, poor conductors, and gain electrons in reactions. Carbon is found in living things and has different allotropes like diamond and graphite. Semiconductors like silicon have properties between metals and non-metals and are used in electronics.

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

10. + Questions
+ 1
+ 3
+ 4
+ 6
+ 7 in the back of your book (glossary)
+ 11
+ 18