What is a force? 1. The amount of matter in an object.

2.Any change in the location of an object.

3. A push or pull on an object that may change the motion of the object.

19. at high pressures, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions, and why? eman- it is much less because real gas partides are not moving. there is no difference because the gas laws are always obeyed. it is much less because at high pressures the temperature drops. it is much greater because real gas partides take up space.

Summarize possible ways in which phases of matter could combine to form a solution.

Stage in which a star’s outer layers have started to cool and grow outward?