Chapter 3

1. the change of a substance from one physical state to another
2. tension the force that acts on the surface of a liquid and that tends to minimize the area of the surface
5. the process in which a solid changes directly into a gas
8. the change of state by which a solid becomes a liquid by adding heat
9. the amount of force exerted per unit area of a surface
10. the resistance of a gas or liquid to flow
11. a measure of how hot (or cold)something is; specifically, a measure of the average kinetic energy of the particles in an object
13. the state of matter in which the volume and shape of a substance are fixed
14. the conversion of a liquid to a vapor when the vapor pressure of the liquid equals the atmospheric pressure
16. a form of matter that does not have a definite volume or shape

1. Law the law that states that the volume of a gas is directly proportional to the temperature of a gas when pressure is constant
2. of matter the physical forms of matter, which include solid, liquid, and gas
3. a measure of the size of a body or region in three-dimensional
4. Law the law that states that the volume of a gas is inversely proportional to the pressure of a gas when temperature is constant
6. the change of state from a gas to a liquid
7. the change of state from a liquid to a gas
12. the change of state from a liquid to a gas
15. the state of matter that has a definite volume but not a definite shape