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Material
Tray, infusion bottle 50 mL, 2  stoppers, ampoule  burner, toilette paper, water, methylated spirit, matches,
dropper bottle (10 ml) with lime water.
Experiment
1. Transfer some water into the tray.
2. Use one of the stoppers as a stand for the ampoule burner.
3. Ignite it inside the tray.
4. Cover the burner by the inversed dry infusion bottle.
5. Lift the bottle, turn it upside and close it.
6. Look for changes. Try to explain them.
7. Open the bottle again for a short moment in order to inject some lime water. Quickly close it again.
8. Shake and write down observations. Try to explain them.
Observation
ad 4: The flame goes out.
ad 6. A condensation is formed on the inner wall of the bottl.
ad 8. Lime water becomes turbid and white.
Explanation
A chemical reaction between methylated spirit and air leaves water vapour (condensation on the bottle)
and carbon dioxide (turbidity of lime water).