I have done some experiments on metals before to see how well they react in different situations.

One of these was -

Displacement.

This is where I put different metals into different metal sulphates to see which metals where more reactive and dominant for example: I put Magnesium into copper sulphate, and because magnesium is more reactive than copper the magnesium `attacked' the copper and you are left with magnesium sulphate and copper remnants.

Reactivity Table

My Testing

In this test I will be testing

Zn Mg Fe Ca

(All in powder form to give a larger surface area)

Fair testing

Zn - Mass No 65

Mg - Mass No 24

Fe - Mass No 56

Ca - Mass No 40

Using 1g of each would be unfair because they would be different amounts according to their mass numbers so I used a different method.

Zn - 6.5g

Mg - 2.4g...