Metal Displacement Reactions

Select the products of this displacement reaction:

iron + copper sulphate -> iron sulphate + copper

• iron + copper sulphate

• iron sulphate + copper

• iron + iron sulphate

• copper + copper sulphate

Select the reactants of this displacement reaction:

iron + copper sulphate -> iron sulphate + copper

• iron + copper sulphate

• iron sulphate + copper

• iron + iron sulphate

• copper + copper sulphate

In a displacement reaction...

• ... a more reactive element pushes out a less reactive element from its compound.

• ... a less reactive element pushes out a more reactive element from its compound.

• ... a more reactive compound pushes out a less reactive compund from its element.

• ... a less reactive element pushes out a more reactive element from its compound.

Shinno and Alfie are doing an experiment. They add magnesium to copper sulphate. Select the most likely result.

• Copper + magnesium sulfate is produced.

• Copper sulfate + copper is produced.

• Magnesium sulfate + copper is produced.

• Magnesium + copper sulfate is produced.

Select the correct explanation for why magnesium displaces copper from copper sulphate.

• Magnesium is less reactive than copper.

• Magnesium is more reactive than copper.

• Magnesium is as reactive as copper.

• There has been bad blood between magnesium and copper for centuries.

Momo and Yuki are doing a different experiment. They add copper to magnesium suplhate. Select the most likely outcome.

• Copper, magnesium and sulfur are produced.

• Copper and magnesium are produced.

• Copper sulphate and magnesium are produced.

• The copper and magnesium sulphate remain unchanged.

Select the best explanation for why there is no reaction between copper and magnesium sulphate.

• Copper is more reactive than magnesium so does not displace it.

• Copper is less reactive than magnesium so does not displace it.

• Copper is less reactive than magnesium so displaces it.

• Copper is more reactive than magnesium so displaces it.

Aluminium + iron oxide -> ?

• aluminium + aluminium oxide

• iron oxide + iron

• aluminium oxide + iron

• aluminoum + iron oxide

Removing metals from compounds containing oxide requires mixing the powders and heating them strongly. This is called a ...

• thermite reaction.

• endothermic reaction.

• decomposition reaction.

• physical change.

Select a disadvantage of displacement through thermite reactions.

• It looks nice!

• Metals you want can be obtained.

• No energy is required.

• A lot of energy is required.