what is thermochemistry?
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Thermochemistry is the study of the heat energy which is associated with chemical reactions and/or physical transformations. A reaction may release or absorb energy, and a phase change may do the same, such as in melting and boiling. ... Endothermic reactions absorb heat, while exothermic reactions release heat.
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the branch of chemistry concerned with the quantities of heat evolved or absorbed during chemical reactions.
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