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Home > Science > AQA Science Topics > Metals and their uses > Extracting metals and making alloys

Science

Metals and their uses

Metals and their uses - Test

1.

Why can gold be found in the Earth's crust in its native state?

2.

Why is aluminium extracted from aluminium ore by electrolysis?

3.

Why is iron extracted from iron ore by reduction with carbon or carbon monoxide?

4.

What happens to iron oxide in a blast furnace?

5.

In comparison with steel, what is pure iron like?

6.

What is the percentage of iron in the iron from a blast furnace?

7.

Which type of steel is likely to be used for making cutlery?

8.

What process is used to purify copper?

9.

Why is titanium expensive to extract from its ore?

10.

Phytomining involves:

11.

Copper can be obtained by reacting solutions of copper compounds with scrap iron. This sort of reaction is called: