In this lesson, you are introduced to the concept that temperature causes molecules and atoms to move faster and farther apart, which in turn causes the change from solid to liquid, and liquid to gas. This experiment allows you to experience the effects of increased temperature on air inside a balloon.
1. Will the weight change when the flask/bottle, water and balloon are heated, cooled?
2. What do you think will happen to the balloon when the bottle is heated, cooled?
3. What is going to happen to the water when it is heated; cooled?
1. Compare your observations to your predictions.
A. Were your predictions correct?
B. Did anything surprise you during the experiment? If so describe it.
2. What do you think caused the balloon to expand? What’s going on outside the balloon that’s causing this to happen?
3. Why do you think the balloon was sucked into the bottle? What’s going on outside the balloon that’s causing this to happen?
4. What did you observe inside the bottle as it cooled?
5. What’s happening to particles inside the balloon? Are they moving? Were they moving?
6. How did this experiment demonstrate water changing from liquid to gas?
7. What would have happened if the bottle were placed in the freezer?