Welcome to the Quiz!

This quiz contains 7 questions from a mix of 1 subtopics.

A substance that increases the rate of a reaction without being chemically changed, or used up, is called a .

catalyst

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Do transition metals make good catalysts?

yes

no

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Should you include the catalyst in the chemical reaction as one of the reactants? 

yes

no

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The two graphs above show the same chemical reaction, but in the presence and absence of a catalyst.

Which one shows the reaction occurring in the presence of a catalyst?

graph 2

graph 1

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Describe the effect of a catalyst on the activation energy and enthalpy change of a chemical reaction.

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2

What is the effect of a catalyst on the Boltzmann distribution curve?

the curve remains unchanged

the curve becomes flatter

the curve becomes steeper

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How does adding a catalyst affect the x-axis of a Boltzmann distribution curve?

the activation energy position moves to the left

the activation energy position moves to the right

the average energy position moves to the left

the average energy position moves to the right

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