1. Unit F Simple Chemical Reactions St. Mary´s College Form 1 G

2. Unit learning map St. Mary´s College Form 1G F1 Changing Materials F2 Acids and Metals F3 Acids and Carbonates F4 Firefighting F5 Burning Changes F6 Getting Hotter Unit F Simple Chemical Reactions

3. Acids and Carbonates Acids react with carbonates to make Carbon Dioxide.

4. A Test for carbon Dioxide limewater Carbon dioxide is a colourless gas; Carbon dioxide does not burn as hydrogen; Carbon dioxide gas turns limewater milky. 1 2 3 What happens to limewater when calcium carbonate is added to acid?

5. Acids and Carbonates About testing carbon dioxide... calcium carbonate + hydrochloric acid carbon dioxide + calcium chloride + water Metal carbonate + acidcarbon dioxide + salt + water

6. Carbonates... calcium carbonate copper carbonate sodium carbonate All carbonates make carbon dioxide when they neutralise acids.

7. Carbonates rocks... limestone chalk marble

8. What do you know about acids and carbonates? ?

9. 1 – Acids react with carbonates to make carbon dioxide. This is a neutralisation reaction. 2 – Carbon dioxide gas turns limewater milky. 3 – Limestone, marble and chalk are made from calcium carbonate, so they react with acids. This means that they wear away because of acids in the surroundings.