Latent heat can be measured from a heating or cooling line graph., Use a heater with a known power such as 60w. , This means you know how much energy is transferred each second., Record the temperature of a known mass of ice each second., This will generate a graph that looks like this., The graph is horizontal at two places., This is where the heat isn't increasing the temperature., Instead the heat is breaking the bonds between the particles and changing their state., The longer the horizontal line, the more energy has been used to cause the change of state., The amount of energy represented by these horizontal lines is equal to the latent heat.,

Calculating Specific Latent Heat from Heating Graphs

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