Q8 of 79 Page 3

What are alloys?

Alloys are a homogeneous mixture of two or more metals or a metal and a non-metal. It is prepared by first melting the primary metal, and then, dissolving the other elements in it. It is then cooled to room temperature. For example, brass is an alloy of copper and zinc.

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6

Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).

 7

Name two metals which will displace hydrogen from dilute acids, and two metals which will not.

 9

Which metals do not corrode easily?

 10

Name two metals which are found in nature in the free state.