Experiments and ideas: Physical changes

1. Can the three states of water exist together in a test tube?
2. Is steam different from water vapour?
3. How do clouds form?
4. Water passing through a beaker?
5. Examine your breath! 
6. Boil water in a paper cup.
7. How to pick up an ice cube with string and salt?
8. To sublime or not to sublime! That is the question.
9. Does water boil past 100ºC?
10. Observe a candle burn
11. How to make a heat pack. (Sodium acetate)