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Edexcel OLevel Chemistry revision notes
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Lesson-19.1.5- know that a catalyst works by providing an alternative pathway with lower activation energy.
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Lesson-19.1.4- know that a catalyst is a substance that increases the rate of a reaction, but is chemically unchanged at the end of the reaction.
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Lesson-19.1.6- draw and explain reaction profile diagrams showing ??H and activation energy.
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