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Answered 2009-07-20 06:09:05

When heated, temperature increases. You may have already guessed that. Most substances, but not all, increase in volume as the temperature increases at constant pressure. The pressure would remain the same if the fluid was in an open container.

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In that case, the pressure increases. Specifically, the pressure will be proportional to the absolute temperature.


The molecules of a gas move faster when heated so the pressure increases.


the gas expands and exerts more pressure on the sides of the cylinder. Basically, the pressure goes up due to a temperature increase.




If a magnet is heated to a high temperature it will lose its magnetism.


Regarding only gases for the moment ... If the gas is heated while its volume remains constant, then its pressure increases.


when something is being heated up, it expands increasing the pressure.


convection happens because fluids become less dense and expand and riseas they are heated.


the particles move alot faster, but when there cold they start to slow down


Gas expands under heat so the pressure would rise when a sealed gallon can is heated.


Reduce air pressure until it boils at the desired temperature


it expands and/or its pressure rises, depending on conditions.


Increasing the temperature the phenomenon of evaporation is increased.


Raising the temperature the density is lowered.


At high temperature the strength decrease.


Generally, as a substance in a sealed container is heated, the pressure will increase. (This is especially true of gases as stated by the combined gas law)


When metal is heated to a high temperature it starts melting and when it cools down it freezes or hardens again.


Molecules will rapidly spread apart and move in every direction in the presence of a heated fluid, and tightly bunch up in cooler fluids.


During the phase change the temperature remains constant.


When air is heated in a small jar the temperature obviously rises. When the temperature (aka Kinetic energy) is also rising. This means the molecules are speeding up and colliding more often. Therefore the pressure exerted on the sides of the jar is increased as well.


Heating lead to an increase of pressure.Cooling lead to a decrease of pressure.



Generally, if air is heated, its temperature will increase. And if the pressure remains constant, its density will decrease.


When a gas is heated at a constant rate, the volume will also increase at a constant rate.



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