As the amount of matter changes, the property of matter also changes. When referring to heat capacity, it takes more energy to increase the temperature of a larger amount of substance.

University of California, Davis

A quantity that shows how much energy is transferred to a system to accomplish a given temperature change. This measure IS dependent on the amount of substance.

Heat Capacity

Physics Libretext

Extensive Property

Amount of energy it takes to completely melt or freeze a certain amount of a  substance. 

Heat of Melting

Amount of energy it takes to completely vaporize or condense a certain amount of substance.

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