kennyduong04
29.07.2019 •
Chemistry
Who is the most famous scientist to develop the theory of evolution
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Ответ:
Ответ:
Ответ:
For all chemical reaction some energy is required and that energy is called activation energy (energy that needs to be absorbed for a chemical reaction to start).
There are two types of reaction: endothermic reaction (chemical reaction that absorbs more energy than it releases) and exothermic reaction (chemical reaction that releases more energy than it absorbs).
Reactions occur faster with a catalyst because they require less activation energy.