Question

define the catalyst​

Answer 1

Heyaa☺

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Catalyst

A substance that increases the rate of a chemical reaction

Catalysts are substances that work to increase the speed at which a reaction happens.

They speed up the rate of a reaction by lowering energy.

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Hope you understand..✌

Answer 2

Answer:

Catalyst

The substance in whose presence the rate of a chemical reaction changes, without causing any chemical change to it, us called a catalyst.