Essential Chemistry for IGCSE - Rate Of Reaction (Section 4 - No. 5)
What is the definition of a catalyst?
A substance that increases the temperature of a reaction.
A substance that speeds up a chemical reaction without being consumed in the process.
A substance that slows down a chemical reaction.
A substance that changes the color of the reactants.
Explanation
A catalyst speeds up a reaction without being used up itself.
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