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1.it is the change in rate of a chemical reaction due to the participation of a catalyst​.

2. for reactants to transform into products there should be effective collisions among the reactant particles.

Sagot :

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Answer:

1.A catalyst is a substance that increases the rate of a chemical reaction. A catalyst provides an alternate pathway for the reaction that has a lower activation energy. When activation energy is lower, more reactant particles have enough energy to react, so the reaction

2.In order for a reaction to be effective, particles must collide with enough energy, and have the correct orientation. With an increase in temperature, there is an increase in energy that can be converted into activation energy in a collision, and that will increase the reaction rate.

Explanation:

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