Heat refers to the transfer of energy between objects or systems due to a temperature difference. It can be measured in joules (J) or kilojoules (kJ).
Temperature is the measure of how hot or cold an object is. It determines the direction and rate at which heat will flow.
Calorimeter: A calorimeter is an instrument used to measure the amount of heat released or absorbed during a chemical reaction.
An endothermic process or reaction absorbs heat from its surroundings, causing its surroundings to cool down.