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AP Chemistry
An exothermic process is a chemical or physical change that releases heat energy to the surroundings. It is characterized by a decrease in enthalpy (ฮH < 0) and an increase in temperature.
A chemical or physical change that absorbs heat energy from the surroundings, resulting in an increase in enthalpy (ฮH > 0).
A type of exothermic reaction where a substance reacts with oxygen to produce heat and light.
Heat of Reaction: The amount of heat released or absorbed during a chemical reaction, which can be positive (endothermic) or negative (exothermic).