When stating the density of a liquid, why is it necessary to state the temperature?
The hotter a liquid gets the less dense (it expands and becomes more pressurised) it becomes due to the weakening of intermolecular bonds. As a liquid cools it gets more dense untill solid at freezing point. *** energy is input into a liquid in the form of heat the molecules become energised and excited and begin to break free of the intermolecular bonds untill boiling point where they become totally free from one another. eg: water (low pressure) at <0 is solid (energy put in and bonds begin to weaken)... 0
