LSCPHYS1: States of Matter Assignment

a danielExercise 3.1

Look at the items in Figure 3.2. Make a table with three columns labelled ‘solid’, ‘liquid’ and ‘gas’, and classify the items indicated.

Fig. 3.2: Group of assorted items

In the above Figure, are there items which are not matter? If so, what are they? They could be energy (heat and light)

Exercise 3.2: A change of state play

Make a small play that shows everyone what happens when ice particles turn to water particles and water particles turn to water vapour. Everybody in your class must be water particles. At the beginning you are particles in ice. You are in rows but you are vibrating. The ice is warmed and you vibrate faster.

Then the ice melts. Work out what you will do. Then the water boils. How can you act out the change into water vapour? Finally, you can lose energy and cool down. You condense and freeze again.

Exercise 3.3

1. We learn that matter is made up of small Give some experimental observations that show this.
2. Explain the following observations by using the idea of moving particles:
   1. Wet clothes hanging on a line become dry even in cold
   2. If you put some sugar in tea, the tea will become sweet even if you do not stir
   3. A car tyre is full of a gas, air, but the part of the tyre underneath the wheel does not look flat.
   4. If you place a balloon over the top of a test tube that contains water and you then heat the water, the balloon blows

Exercise 3.4:

1. What is the economic application of change of state?
2. Why is it important to regulate temperatures in mammals?
3. What is a water cycle?
4. How can you make ice scream?
5. What happens when water vapour comes in contact with a cold bottle of soda? Why is it so?