Question

Substance that either increases or decreases the rate of a chemical reaction is called

Answer 1

Substance that either increases or decreases the rate of a chemical reaction is called catalyst.

• A catalyst is a substance that changes the rate of reaction either to speed up or slow down the chemical reaction without losing it's chemical identity.
• It does not initiate and take part in the chemical reaction.
• It does not get used up in the the chemical reaction.
• A catalyst only helps in making the molecules in the chemical reaction to react and make the whole chemical reaction efficient and easier.