explain the effect of pressure on solid liquid and gas
Answers
Temperature Effects
The effect of temperature and pressure on a liquid can be described in terms of kinetic-molecular theory. The following figure illustrates the molecular behavior of a liquid at a low temperature near its freezing point and at a higher temperature near its boiling point.
Microscopic view of a liquid at a low temperature Microscopic view of a liquid at a high temperature
Microscopic view of a liquid at a low temperature. Microscopic view of a liquid at a high temperature.
Note how temperature effects the motion of the atoms or molecules in a liquid. As the temperature of a solid, liquid or gas increases, the particles move more rapidly. As the temperature falls, the particles slow down.
If a liquid is cooled sufficiently, it forms a solid.
If a liquid is heated sufficiently, it forms a gas.
Pressure Effects
Changes in presure have very little effect on the volume of a liquid. Liquids are relatively incompressible because any increase in pressure can only slightly reduce the distance between the closely packed molecules.
If the pressure above a liquid is increased sufficiently, the liquid forms a solid.
If the pressure above a liquid is decreased sufficiently, the liquid forms a gas.
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=Amna
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Explanation:
The pressure law states that for a constant volume of gas in a sealed container the temperature of the gas is directly proportional to its pressure. This can be easily understood by visualising the particles of gas in the container moving with a greater energy when the temperature is increased.
Liquids are relatively incompressible because any increase in pressure can only slightly reduce the distance between the closely packed molecules. If the pressure above a liquid is increased sufficiently, the liquid forms a solid. If the pressure above a liquid is decreased sufficiently, the liquid forms a gas.
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