EDS making a soluble salt

Name the acid in the reaction we watched.

• Hydrochloric acid

• Nitric acid

• Sulphuric acid

Is it being reacted with a metal or a base?

• A metal, zinc

• A base, copper oxide

• A metal, iron

What will the word equation for this reaction be?

• sulphuric acid + copper oxide → copper chloride + water

• sulphuric acid + copper oxide → copper nitrate + water

• sulphuric acid + copper oxide → copper sulphate + water

What colour is the copper oxide when the reaction starts?

• Blue

• Green

• Red

• Black

What colour is the solution that is made at the end?

• Red

• Blue

• Yellow

• Green

What is the black stuff that stays on the filter?

• Copper oxide that has not reacted

• Copper sulphate that has not reacted

• Sulphuric acid that has not reacted

• Water that has not reacted

What is the blue liquid?

• Copper sulphate solution

• Sodium chloride solution

• Potassium permanganate solution

• Magnesium sulfate solution

What happens to the blue liquid once it has all filtered through into the dish?

• It is placed over a Bunsen burner and heated

• It is left to cool at room temperature

• It is mixed with another chemical

• It is poured into another container

What change takes place in the dish as it heats?

• The water from the copper sulphate solution starts to boil and leaves the dish

• The solution changes color

• The solution starts to freeze

What is left in the dish after about a week?

• Blue copper sulphate crystals

• Clear liquid

• White powder

• Green crystals