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A catalyst reduces the energy needed for a reaction to occur. Once the energy needed has been reduced, the reaction can proceed more quickly.
No, catalysts speed up chemical reactions.

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12y ago
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14y ago

we did this in science, they increase the reaction.

EG: blowing on a fire makes it burn better because u r feeding it more oxygen, a catalyst.

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Q: How a catalyst increases or decreases the rates of chemical reactions?
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Related questions

Substance that increases rate of chemical reactions?

catalyst


What effect does a catalyst have?

a catalyst has no effect in chemical reaction. it only increases or decreases the rate of the chemical reaction.


According to collision theory what best explains how a catalyst increases the reaction rate for a chemical reaction?

A catalyst decreases the threshold energy for a chemical reaction. A catalyst decreases energy required for two particles to react. A catalyst lowers the amount of energy needed to reach the transition state.


The role of a catalyst?

A catalyst is a substance which alters the rate of a chemical reaction but is chemically unchanged at the end of the reaction. basically it increases or decreases the speed of a chemical or biological reaction, but it does not get itself involved in the reaction. hoped this helped (:


What helps chemical reactions occur?

A catalyst helps chemical reactions occur.


Biologic catalyst that speed up chemical reactions?

Enzymes are biologic catalyst that speed up chemical reactions by lowering its activation energy Ea


What is the substance called that increases the rate of reactions in living systems?

A catalyst is any chemical that speeds up a chemical reaction. It does this by lowering the activation energy required for the reaction to take place. A catalyst that occurs in an organism is called an enzyme.


What is the biological catalyst that speed up the rate of chemical is?

An enzyme is the biological catalyst that speeds up chemical reactions.


Do all chemical reactions involve catalyst or inhibitors?

no


What can be used to speed up chemical reactions?

A catalyst


What is the substances that speed up chemical reactions?

An enzyme/catalyst


Why dry ether used as a catalyst in chemical reactions?

dry ether is generally used as solvent in chemical reactions. to the best of my knowledge there is no reaction where ether is used as a catalyst.