What's the relation between the temperature and the volume of a substance?

the relationship between temperature and volume will vary greatly depending on the temperature and the volume of the (unknown)substance?? one litre of pure water weighs exactly one kilogram. one litre of water occupies 1000 cubic centimetres. when frozen water expands about 3%. when heated to steam, water as a gas can expand to 1000 times its volume. you can see why steam boilers are not used much anymore. the potential for explosion is enormous. one litre of superheated wated under pressure can make 1000litres of steam INSTANTLY.

Remember your basic PV/T formula: that ratio must stay constant for a substance. So as temperature increases, volume will increase as well if pressure remains constant.

There is a general rule. Heat expands and Cooler temperatures contract with the exception of only one substance. If it wasn't for this one molecule, life as we know it would not be possible. The one molecule is Hydrogen Dioxide (simple water). Water is the only thing that expands when it freezes. When it crystallizes it it becomes lighter an floats. This causes the water in the ocean to circulate and free oxygen is distributed throughout.

Different substances react to temperature in different ways.For instance iron.which is a metal will expand when heated or in high temperatures but will revert to its normal state when cold or in low temperatures. On the other hand,water which is highly volatile will evaporate or attain gaseous state in high temperatures while it solidifies under cold or low temperatures.Therefore water will lose volume in high temperature for instance large waterbodies lose significant amounts of water in summer .in the winter precipitation will generally add to the volume of water bodies.

Most liquids in natural state have little or no change in volume or density with temperature change. They are used for different typres of pumps and hydrolics for that reason. Most change in volume happens when changed in form, liquid to solid and back. Mercury in natural solid or ground to dust is the same. It is extremely active in liquid form though. Water when boiled, reduces by evaporation and expands when frozen??? Changes from liquid>solid>gas!

(Volume 1/Temperature 1)=(volume 2/temperature 2)

Volume increases as temperature increases. As the temperature goes down, the volume decreases as well.

the greater the temperature, the greater the volume. Hot stuff expands. this is true in most cases (ice for example, expands as it gets colder)

Bottom line here is,... heat expands and cold contracts.