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Catalysts are substances that play a crucial role in chemistry, both in the laboratory and in industrial processes. In this lesson you will learn the definition of a catalyst, how catalysts work in terms of activation energy, key examples of catalysts, their economic and environmental importance, and how they differ from the reactants and products in a reaction. This is an important part of the Edexcel GCSE Chemistry (1CH0) specification.
A catalyst is a substance that increases the rate of a chemical reaction without being chemically changed or used up in the process.
Key points about catalysts:
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