Core practical - Salt preparation (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is a salt in chemistry?
What is a salt in chemistry?
A compound formed from acid + base reaction
What is the general equation for salt formation?
What is the general equation for salt formation?
What is the aim of the copper sulfate practical?
What is the aim of the copper sulfate practical?
To prepare pure, dry copper sulfate crystals
Which safety equipment must be worn when working with acids?
Which safety equipment must be worn when working with acids?
Eye protection
When should you stop adding copper oxide to the acid?
When should you stop adding copper oxide to the acid?
When some black powder remains unreacted
Why do we filter the mixture during salt preparation?
Why do we filter the mixture during salt preparation?
To remove excess copper oxide
What are the products when copper oxide reacts with sulfuric acid?
What are the products when copper oxide reacts with sulfuric acid?
Copper sulfate and water
Why do we heat the sulfuric acid during the reaction?
Why do we heat the sulfuric acid during the reaction?
Makes the reaction happen faster
Why must we add excess copper oxide to the acid?
Why must we add excess copper oxide to the acid?
To ensure all the acid has reacted
What happens during crystallisation of copper sulfate?
What happens during crystallisation of copper sulfate?
Water evaporates & solution gets concentrated
What colour change is observed during the reaction?
What colour change is observed during the reaction?
Black copper oxide forms blue solution
Which type of salt is produced when using hydrochloric acid?
Which type of salt is produced when using hydrochloric acid?
Chlorides