1. Limewater and carbon dioxide

2. We breath in oxygen

3. We breath out carbon dioxide

4. Video
(first 20 seconds)

5. Experiment
What would happen when carbon dioxide reacts with limewater?

6. Materials
a test tube
limewater
a straw
a funnel

7. Procedures Pour limewater into test tube
Blow bubbles into cup for at least one minute (caution— do not drink the solution)
Video

8. Results

9. Results
When carbon dioxide reacts with limewater, it turns __________________

10. Results
When carbon dioxide reacts with limewater, it turns white/cloudy/milky.

11. Independent learning on the VLE
Repeat the same experiment at home and compare your results.
The products of this reaction are calcium carbonate (the same chemical as chalk - that is why it goes milky!