uses of metals

Question 1

what is aluminium used for

Answer 1

overhead electricity cables (with a steel core strength)
cooking foil, food containers and drink cans
aircraft

Question 2

what are the properties that make aluminium suitable for these uses

Answer 2

a good conductor of electricity, low density (light), ductile, resist corrosion
low density, non-toxic, resist heat and corrosion, can be rolled into thin sheets
low density, resists corrosion

Question 3

what is copper used for

Answer 3

electrical wiring
pipes for the water supply inside homes

Question 4

what properties make copper suitable for these uses

Answer 4

one of the best conductors of electricity, ductile
malleable (so pipes are easy to bend), does not radily corrode, non-toxic

Question 5

what are the uses of zinc

Answer 5

coating or galvanising iron and steel
for torch batteries

Question 6

what properties make zinc suitable for these uses

Answer 6

prevents rusting through sacrificial protection and also by keeping air and moisture out
gives a current when connected to a carbon electrode in a paste of electrolyte