Why did the temperature of the calorimeter decrease when a solute is added?

or:Why did the temperature of the calorimeter decrease when a solute is added?or:When you mix two substances, it might take some energy to combine th

or:Why did the temperature of the calorimeter decrease when a solute is added?

or:When you mix two substances, it might take some energy to combine them. For instance, a cake has to be heated before it becomes a cake. That is called endothermic. which means \"heat in\" which is to say the reaction absorbs heat.Other mixtures are exothermic, which means \"heat out\

or:Calorimeter is a isolated system.Where heat cannot enter or leave it but when we add solute it absorbs the energy from the fluid so temperature decrease.

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