Making a soluble salt practical

What two reactants do you need to make copper sulfate?

• Nitric acid and copper oxide

• Sulfuric acid and copper oxide

• Hydrochloric acid and copper oxide

• Sulfuric acid and magnesium oxide

Why do you heat up the acid?

• To speed up the reaction.

• To slow down the reaction.

• To melt it.

The reactant that is in excess is the

How do you remove the excess copper oxide?

• Pour it down the sink.

• Evaporate it.

• Filter it.

• Leave it to dry.

The colour of the copper sulfate solution is

Why do you need to heat the copper sulfate solution over a water bath?

• To heat up the acid.

• To start to evaporate the salt.

• To start to evaporate the water.

• To get rid of the salt.

The name for the formation of crystals is

• Evaporation

• Crystallisation

• Condensation

• Distillation

Why do you leave the solution in a warm place for a few days?

• To stop the water from evaporating.

• It looks nice.

• To allow the crystals to form slowly.

How would you dry your final crystals?

• Use a hair dryer.

• Pat them will filter paper.

• Add water.

• Put them back over a Bunsen burner.

What acid would you need to use if you wanted to make copper chloride crystals?

• Sulfuric acid

• Phosphoric acid

• Hydrochloric acid

• Nitric acid