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a reaction in which heat is absorbed from the surroundings and the temperature of the reaction mixture decreases when more energy is taken in than it releases.
everything around, and excluding, the chemical system itself.
the temperature at which a substance changes phase from a liquid to a gas at a specific or fixed...
the number of protons in the nucleus of an atom, which determines which element it is. In a...
the difference between the energy absorbed to break bonds and the energy transferred to the...