Essential Chemistry for IGCSE - The Variety Of Organic Chemicals (Section 3 - No. 29)
What is a catalyst in cracking?
A substance that slows down a chemical reaction.
A substance that increases the rate of a chemical reaction without being consumed in the process.
A product of the cracking process.
A starting material in the cracking process.
Explanation
A catalyst speeds up a reaction without being changed itself.
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