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Questions and Answers
What is critical pressure?
What is critical pressure?
- The pressure required to liquefy a gas at its critical temperature (correct)
- The pressure at which a gas evaporates into the atmosphere
- The pressure at which a gas solidifies into a crystalline structure
- The pressure at which a gas reaches its maximum kinetic energy
What is critical temperature?
What is critical temperature?
- The temperature at which a gas reaches its maximum kinetic energy
- The temperature at which a gas can be liquefied under high pressure
- The temperature at which a gas turns into a liquid spontaneously
- The temperature at which a gas cannot be liquefied regardless of pressure (correct)
How do liquids differ from gases in terms of container filling?
How do liquids differ from gases in terms of container filling?
- Liquids completely fill the container space
- Gases do not fill the entire container space
- Liquids do not disperse to fill all the space of a container (correct)
- Gases and liquids both fill the entire container space
What type of motion do liquids exhibit?
What type of motion do liquids exhibit?
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What happens to the speed of gas molecules when the gas is cooled?
What happens to the speed of gas molecules when the gas is cooled?
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Study Notes
The Liquid State
- Liquids possess higher density compared to gases, occupying a specific volume and density due to van der Waals forces.
- Liquids are relatively incompressible, meaning their volume does not change significantly under pressure.
- As fluids, liquids do not have a definite shape, adapting to the shape of their container similar to gases.
- Transitions between gas and liquid states, as well as from liquid to solid, are influenced by temperature and pressure conditions.
- Cooling a gas decreases its kinetic energy, which results in a reduction in the velocity of the gas molecules.
- When pressure is increased on a gas, molecules come closer, allowing van der Waals forces to induce a phase change to the liquid state.
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