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What is the relationship between temperature and volume?

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04/23/2013

higher temperatures make the molecules move around faster and spread further apart.

water has a greater volume at a high temperature (it goes from liquid to gas form); but when water freezes at low temperatures it also expands (like when you freeze a plastic bottle of water and the plastic breaks).

The above answer is non-sense. It doesn't shed any light. When dealing with solids and liquids it is complicated. But it is quite simple for gases... here ya go:

The ideal gas law is:

PV = nRT, where P = pressure, V = volume, n= number of moles, R = ideal gas constant, T = Temperature in K