Chemistry C1.3

C1 3.1

An "ore" is a rock with enough metal inside of it. Forests may need to be cut down to allow us to dig for ores.

The most unreactive metals are found in the earth as the metal itself.

Displacement is when you react the ore with carbon to give us the pure metal.
TIP: it is important to know what the qualities of the pure metals are...

C1 3.2

Iron oxide is reduced in a 'blast furnace' with carbon.

• The iron it produced is named 'cast iron' which is hard and brittle.
• If you were to remove Carbon and other impurities from this it would create 'pure iron' which is too soft for many uses.

However, most Iron (Fe) is used to make steels which are alloys (a mixture of metals to stop layers from sliding).

If you have high amounts of other elements in with Iron it makes the alloy hard and it resists corrosion (like stainless steel).

If you have low amounts of other elements in with Iron, it makes the alloy easy to shape and can easily be adjusted to use.

C1 3.3

Aluminium has low density and resists corrosion.

Other elements, like Aluminium, that are more reactive…