| A | B |
|---|
| kinetic theory | an explanation of how particles in matter behave |
| melting point | the temperature at which a solid begins to liquefy |
| heat of fusion | the amount of energy required to change a substance from a solid to a liquid |
| boiling point | the temperature at which a liquid begins to turn to a gas |
| heat of vaporization | the energy it takes to turn a substance from a liquid to a gas |
| diffusion | the spreading of particles throughout a given volume until they are uniformly distributed |
| plasma | matter consisting of positively and negatively charged particles; the most common matter in the universe |
| thermal expansion | an increase in the size of a substance when the temperature is increased |
| crystal lattice | the geometric pattern of atoms in a solid |
| buoyancy | the ability of a fluid (liquid or gas) to exert an upward force on an object immersed in it |
| buoyant force | the supporting force of a fluid upon an object in it |
| pressure | force exerted per unit area |
| viscosity | the resistance to flow by a liquid |
| Pascal | scientist who discovered that pressure applied to a fluid is transmitted throughout the fluid |
| Bernoulli | scientist who discovered that as the velocity of a fluid increases, the pressure exerted by the fluid decreases |
