QUANTITY OF HEAT.

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• Heat is a form of energy that flows from one body to another due to temperature differences between them.

HEAT CAPACITY.

• Heat capacity is defined as the quantity of heat required to raise the temperature of a given mass of a substance by one degree Celsius or one Kelvin. It is denoted by ‘C’.
• Heat capacity, C = heat absorbed, Q / temperature change θ. The units of heat capacity are J / 0C or J / K.

SPECIFIC HEAT CAPACITY

• is the quantity of heat required to raise the temperature of 1 kg of a substance by 1 0C or 1 K. It is denoted by ‘c’, hence,
• c = Q / m θ where Q – quantity of heat, m – mass and θ – change in temperature. The units for ‘c’ are J kg-1 K-1. Also Q = m c θ.