What happens to the kinetic energy of a substance when its temperature increases?
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Answer:
As the temperature of a substance increases, its molecules move faster and therefore take up more space. This generally causes a substance to increase in volume when heated. When we increase temperature it produce kinetic energy this will loose up the bonds. so the bonds will break up and it will move.
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Other answers
According to the kinetic molecular theory temperature is proportional to the average kinetic energy of the molecules. For molecules of constant mass, an increase in KE is an increase in the average speed. There is only one thing that happens as average KE increases. Temperature increases. Period. Several people mention phase changes. Phase changes occur at a constant temperature. If the temperature stays constant then the KE stays constant. Energy goes into breaking intermolecular bonds, but NOT into changing the KE. Constant temperature = constant average KE. Period. :)
Elaine F
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