Calorie

ChatGPT's explanation of "heat": Heat refers to a form of energy in physics and chemistry, usually used to describe the thermal energy of an object or system. It is the result of energy transfer, usually related to temperature changes. The unit of heat is joule (J) or calorie (cal). In daily life, heat is often used to express the energy contained in food.
For example:

When you eat an apple, the calories in the apple are absorbed by your body, providing you with energy to carry out your daily activities.
During cooking, the transfer of heat cooks ingredients, changing their physical and chemical properties.

The concept of heat originates from thermodynamics, the science that studies the conversion of energy and the properties of matter. The measurement and calculation of heat are very important in scientific research, engineering technology and daily life.

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