SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When a gas is compressed, what happens to its volume?
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the volume of the gas does not change
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the volume of the gas increases
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the volume of the gas decreases
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the volume of the gas increases and then decreases
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Explanation:
Detailed explanation-1: -So, when the gas undergoes compression, there is a decrease in pressure with an increase in volume.
Detailed explanation-2: -The reduction in the volume of the gas means that the molecules are striking the walls more often increasing the pressure, and conversely if the volume increases the distance the molecules must travel to strike the walls increases and they hit the walls less often thus decreasing the pressure.
Detailed explanation-3: -When a force is applied by pushing the plunger in, the air becomes compressed. Hence, the space taken up by the air is now smaller (as seen below). This shows that there is a decrease in the volume of the gas (although the mass of the gas remains the same).
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