Group 4 chem

What are the uses of aluminum

• can

• all correct

• cooking ware

• roofing

What are the uses of copper?

• all correct

• electrical wire

• cans

• food containers

why are metals used often in the form of alloy?

• because it can break easily

• because its quick

• artificial joints are made of alloy instead of full metals because alloy are stronger and do not ware away easily

• because it can be repaired slowly

which of the following is an alloy

• brass

• all correct

• pewter

• solder

what materials are best for cookware

• brass

• metal

• alloy

• copper

what is the melting point of aluminum?

• 100c

• 200c

• 660c

• 875c

what is the boiling point of aluminum?

• 3772c

• 2467c

• 7218c

• 109c

How much density does aluminum have?

• 2.7g/dm³

• 8.6g/dm³

• 6.9g/dm³

• 3.7g/dm³

what is the density of copper?

• 6.9g/dm³

• 8.9g/dm³

• 3.8g/dm³

• 3.9g/dm³

what is the melting point of copper?

• 3977c

• 4212c

• 3998c

• 1084c