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Ch.3 StatesOfMatter
Mary DeFelice; PNHS
| Question | Answer |
|---|---|
| If an object has a definite shape and volume what is it? solid, liquid, or gas? | It's a solid. |
| What is Kinetic Energy? | is the energy an object has due to it's motion. |
| what allows gas to fill a container of any shape or size? | the constant motion of particles. |
| what is a liquid? | the state of matter in which a material has a definite volume but not a definite shape. |
| what is the result of a force distributed over an are? | pressure. |
| what is Charles's law? | it states that the volume of a gas is directly proportional to its temperature in kelvins if the pressure and the number of particles of the gas are constant. |
| if something states that the volume of a gas is inversely proportional to its pressure if the temp and the number of particles are constant? | Boyle's Law. |
| a temperature of 0 K is called what? | absolute zero. |
| what is a phase change? | is the reversible physical change that occurs when a substance changes from one state of matter to another. |
| during what kind of change does the system absorbs energy from its surroundings? | endothermic change. |
| what is heat fusion? | the amount of energy for water. |
| what kind of change of change does the system release energy to its surroundings? | exothermic change. |
| vaporization is the change of what? | the phase change in which a substance changes from a liquid into a gas. |
| _____________ varies from substance to substance. | heat of vaporization. |
| what is evaporation? | process that changes a liquid to a gas at temps below the substance's boiling point. |
| vapor pressure is? | the pressure caused by the collisions of this vapor and the walls of the container. |
| the phase change in which a substance changes to a gas to a liquid is? | condensation. |
| the phase in which a substance changes from a solid to a gas without changing to a liquid first is? | sublimation. |
| when a gas changes directly into a solid without first changing to a liquid is? | deposition. |
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