The heat capacity at constant volume (Cv) is defined as: (2022)

The amount of heat required to raise the temperature of a substance by 1°C at constant pressure.
The amount of heat required to raise the temperature of a substance by 1°C at constant volume.
The total heat content of a substance.
The heat required to change the phase of a substance.

The heat capacity at constant volume (Cv) is defined as: (2022)

Step 1: Understand that heat capacity is a measure of how much heat energy a substance can store.
Step 2: Recognize that 'constant volume' means the substance is not allowed to expand or change its volume while heating.
Step 3: Know that Cv specifically refers to the heat capacity when the volume is kept constant.
Step 4: Learn that Cv tells us how much heat energy is needed to increase the temperature of the substance by 1°C.
Step 5: Conclude that Cv is important for understanding how substances respond to heat when their volume does not change.

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