How does adding or removing heat to a system result in of temperature or change in state?

Answer 1

then the temperature either goes up or down.

When you add heat to a substance the substance normally spreads out more for on a subatomic level the atoms vibrate more. Gases have a larger volume at the same pressure and fluids can increase in volume too. Solids normally expand. The opposite to the above is true with a decrease in temperature.

It is good to note that if you melt ice it decreases in volume which is proof that heat dose not always expand the substance.

Answer 2

Adding heat energy usually warms a substance, and subtracting heat energy usually cools the substance. heat energy only moves from a hot substance to a cool substance. Example: a pan on the stove could be room temperature, but once you put it on the flame, the heat from the flame transfers to the cooler pan, heating it up.

Additional answer

In some cases adding heat energy does not raise the temperature but moves the substance from one phase to another. For example, if you add heat energy to ice you melt it and it becomes water at the same temperature. If you continue adding heat energy then, of course, that water then gets warmer.

Answer 3

hh