Heat capacity (C)

Definition

Heat capacity (C) is the amount of heat energy required to raise the temperature of a substance by one degree Celsius. It is an extensive property dependent on the quantity of the substance.

5 Must Know Facts For Your Next Test

1. Heat capacity is measured in units of joules per degree Celsius (J/°C).
2. The heat capacity of a substance depends on its mass and specific heat capacity (c).
3. Heat capacity can be calculated using the formula $C = q / \Delta T$, where $q$ is the heat added and $\Delta T$ is the change in temperature.
4. There are two types of heat capacities: specific heat capacity, which is per unit mass, and molar heat capacity, which is per mole.
5. In thermochemistry, understanding heat capacity helps predict how substances will respond to thermal energy changes.

Related terms

Specific Heat Capacity:

The amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

Molar Heat Capacity: The amount of heat required to raise the temperature of one mole of a substance by one degree Celsius.

$\Delta H$ (Enthalpy Change): $\Delta H$ represents the total change in enthalpy during a chemical reaction, often related to absorbed or released thermal energy.