Question

what is heat? heat is the energy needed to change the temperature of 1 g of a substance by 1°c. heat is the average kinetic energy of the particles of a substance. heat is the total energy of a substance due to the movement of its particles. heat is the energy that flows between two substances of different temperatures.

Explanation:

Heat is defined as the energy that transfers between two substances with different temperatures. The energy needed to change the temperature of 1 g of a substance by 1°C is specific - heat capacity. The average kinetic energy of the particles of a substance is related to temperature. The total energy of a substance due to the movement of its particles is internal energy.

Answer:

Heat is the energy that flows between two substances of different temperatures.