Welcome to your B6 Practice Questions 2.4 – Chemical reactions

1. 
What happens in a chemical reaction?

2. 

When substances change and form a new substance, we say that the substances together.

3. 
In a chemical reaction, a new substance forms.

4. 

The substances that react together are called .

5. 
What are products?

6. 

The new substances that form in a chemical reaction are called .

7. 
When vinegar and bicarbonate of soda react, a gas is produced.

8. 

A gas that forms is that a chemical reaction has taken place.

9. 
Clear limewater reacts with carbon dioxide. What is the product?

10. 

When limewater reacts with carbon dioxide, a substance called calcium forms.

11. 
In the reaction of limewater and carbon dioxide, calcium carbonate is a reactant.

12. 

When vinegar and bicarbonate of soda react, a is produced.