when a gas is cooled the number of collisions decrease give reason
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As opposed to molecules in a liquid or solid, those in a gas can move freely in the space in which you confine them. They fly about, occasionally colliding with one another and with the container walls. The collective pressure they exert on the container walls depends on the amount of energy they have. They derive energy from the heat in their surroundings, so if the temperature goes up, so does the pressure. In fact, the two quantities are related by the ideal gas law.
As opposed to molecules in a liquid or solid, those in a gas can move freely in the space in which you confine them. They fly about, occasionally colliding with one another and with the container walls. The collective pressure they exert on the container walls depends on the amount of energy they have. They derive energy from the heat in their surroundings, so if the temperature goes up, so does the pressure. In fact, the two quantities are related by the ideal gas law.
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The gas molecules move randomly in all directions with different velocities .They collide with each other.These collisions results in kinetic energy.
Kinetic energy is directly proportional to temperature.
When kinetic energy is less then temperature of gas will be less.
Hence a gas is cooled when the no. of collisions decreases.
I think it may help you.
Kinetic energy is directly proportional to temperature.
When kinetic energy is less then temperature of gas will be less.
Hence a gas is cooled when the no. of collisions decreases.
I think it may help you.
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