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Chapter 16 kg
science
| Question | Answer |
|---|---|
| explanation of the behavior of molecules in matter; states that all matter is made of constantly moving particles that collide without losing energy | kinetic theory |
| temperature at which a solid begins to liquefy | melting point |
| amount of energy required to change a substance from the solid phase to the liquid phase | heat of fusion |
| the temperature at which the pressure of the vapor in the liquid is equal to the external pressure acting on the surface of the liquid | boiling point |
| the amount of energy required for the liquid at its boiling point to become a gas | heat of vaporization |
| spreading of particles throughout a given volume until they are uniformly distibuted | diffusion |
| matter consisting of positively and negatively charged particles | plasma |
| increase in the size of a substance when the temperature is increased | thermal expansion |
| ability of a fluid a liquid or a gas to exert an upward force on an object immersed in the fluid | buoyancy |
| amount of force exerted per unit area SI unit is the pascal | pressure |
| a fluids resistance to flow | viscosity |
| SI unit of pressure | pascal |