Name_____________
Date_______________
Teacher _________________
Block/Class__________________

1. Can you explain why dye spreads across a solution as in the above illustration?

2. Imagine you are at a party where someone dared you to pop one of the helium balloons in a room that has all the windows and doors closed. Describe what would happen to those Helium atoms once they have been released from the balloon. Specifically talk about their eventual position inside the room and what their kinetic energies would be like if you could actually measure them.

3. Suppose you were the size of a molecule in a liquid in a glass. Someone takes that glass and puts it in the freezer. After a while the liquid freezes. How does what you see and feel change?

4. Draw a picture of a closed container that has 10 oxygen molecules in a gaseous state. Label the molecules A through J. Then draw a picture of the gas a "little while later." The second picture should show where you think the molecules A through J might be at this time.

5. Draw a picture of a closed container that has 10 liquid water molecules. Label the molecules A through J. Then draw a picture of the liquid a "little while later." The second picture should show where you think the molecules A through J might be at this time.

6. Could there be a compressible liquid? Explain your answer using molecules/atoms in your answer.

7. Why does a hot cup of coffee placed on a counter cool down? Why does a glass of iced tea warm up? Describe what is happening at the atomic level.

8. You have two boxes of equal size each containing a gas. The two gases are at the same temperature but on average particles in one box are moving faster than particles in the other box. How can that be?