1.
The force pushing on something
2.
The layer of gases surrounding Earth
3.
Anything that has mass and takes up space
4.
a state of matter that spreads out and is often invisible
5.
A state of matter that flows and takes different shapes
6.
Something you can see through clearly
7.
A state of matter that keeps its shape
8.
the force that pulls things toward Earth
9.
How hot or cold something is
10.
When a gas cools and changes back into a liquid
11.
The condition of the air outside
12.
When a liquid changes into a gas
