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chapter 3
Question | Answer |
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solid | is the state of matter in which materials have a definite shape and a definite volume. |
liquid | is the state of matter in which a materiel has a definite volume but not a definite shape. |
gas | is the state of matter in which a material has not definite shape and no definite volume. |
kinetic energy | is the energy due to motion. |
phase change | is the reversible physical change that occurs when a substance changes from one state of matter to another. |
endothermic | the system absorbed energy from its surroundings. |
exothermic | it releases its energy from its surroundings. |
heat fusion | the amount of energy absorbed in a substance. |
vaporization | The phase change in which a substance changes from a liquid to gas. |
evaporation | is the process that changes a substance from liquid to a gas temperature below boiling point |
heat of vaporization | One gram of water gains 2261 joules of energy when it vaporizes. |
vapor pressure | The pressure caused by the collision of this vapor and the walls of its container. |
condensation | is the phase change in which a substance changes from gas or vapor to liquid. |
sublimation | is the phase change in which a substance changes from solid to gas. |
deposition | when gas changes to solid without changing to liquid first. |