5.3 Metal mixtures

What is an alloy?

Which properties of aluminium make it useful for building planes?

Why is an alloy of aluminium used for making planes instead of pure aluminium?

Pure gold is 24 carat gold. What does this mean?

Explain the difference between the purity of 18 carat gold and 24 carat gold.

Why do we not use pure silver for our coins?

Why do we use pure copper for our coins?

What properties must an alloy used inside the body have?

Why are some glasses frames made from shape memory alloy?

Why is a range of temperatures given for the melting point of bronze?