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18 January, 11:03

What is a catalyst defined as? *

A. a substance that speeds up a reaction, and is completely used up

B. a substance that slows down a reaction, and is completely used up

C. a substance that speeds up a reaction, and is not used up

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  1. 18 January, 12:34
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    You may think of a catalyst as something that starts a reaction, but you could also define it as C. a substance that speeds up a reaction, and is not used up.
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