Rights: © Copyright 2014. University of Waikato. All Rights Reserved. Published 29 April 2014 Size: 110 KB

This diagram shows the heat energies needed to convert 1 gram of ice at 0°C to its liquid and gaseous states. The unit of energy used is the calorie, which is defined as being the amount of heat energy needed to raise the temperature of 1g of water by 1°C.