RPA GCSE Science - Chemistry RP Making Salts

What is the base used to prepare copper sulphate?

• Copper oxide

• Sulfuric acid

• Copper sulfate

• Copper carbonate

What is the acid used to prepare copper sulphate?

• Copper oxide

• Sulfuric acid

• Copper sulfate

• Copper carbonate

What is the purpose of heating the sulfuric acid?

• To neutralize the acid

• To speed up the reaction

• To dissolve the copper oxide

• To evaporate the water

What is a base?

• Any material that neutralizes an acid

• A metal oxide

• A metal carbonate

• A metal hydroxide

How can you tell if you have added excess copper oxide?

• The solution has blue unreacted copper sulphate at the bottom

• The solution has black unreacted copper oxide at the bottom

• The solution turns green

• The solution has yellow bits at the bottom

What is the purpose of filtering the mixture?

• To remove the solid copper sulfate

• To remove the solid copper oxide

• To remove the liquid sulfuric acid

• To remove impurities

Why is the solution poured into an evaporating basin?

• To speed up the evaporation process

• To cool down the solution

• To dissolve the copper sulfate

• To remove impurities

Why is the evaporating basin heated over a beaker of boiling water?

• To prevent the breakdown of copper sulfate crystals

• To speed up the heating process

• To dissolve the copper sulfate crystals

• To remove impurities

What is the formula for copper sulphate?

• CuSO4

• CUS

• CuS

• CSO4

What piece of lab equipment is this?

• Evaporating basin

• pestle

• flask

• bowl