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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.
a substance that can lose a proton in an acid-base reaction.
the phase in matter in which the particles are far apart and can move freely.
the heat of reaction or the change in heat when reactants form products during a chemical...
a molecule that has a partial negative charge at one end and a partial positive charge at the...