4.
Methane is made of these
5.
How the appearance of a substance changes
8.
Observe with the naked eye
10.
Only planet with Water in all 3 phases: liquid, ice, vapor
11.
adding or removing energy can affect molecules'_
13.
holds its shape and does not take the shape of its container.
14.
Has no visible shape and fills its container.
15.
flows and can take the shape of its container
16.
When either one goes up the other goes down
17.
Proved air is matter and behaves certain ways.
18.
continuous force that one object puts on another while they are touching.
19.
The amount of space a substance or object takes up.
20.
A mathematical description of a natural phenomenon.
21.
Helped Robert Boyle to measure air!
22.
Robert Boyle was one of the first scientists to base his information on __________.
