What is MATTER ?
What is VOLUME ?
What are the three states (or "phases") of matter ?
How can we show that air takes up space ?
If a balloon full of air and an empty balloon are hung on opposite sides of a balance, what happens ?
What are properties ?
Describe some properties of solids.
Describe some properties of liquids.
Describe some properties of gases.
Give an example of matter changing states. How are its properties affected / different when this happens ?