Chem: The rate and extent of chemical change

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7 Terms

1

What is a catalyst?

A substance that speeds up chemical reactions

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2

What does a catalyst offer?

An alternative pathway at a lower activation energy

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3

What happens when the number of reactant particles doubles?

The more frequent collisions between the particles means there is an increase in the rate of reaction.

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4

How does temperature effect the rate of reaction?

The particles gain more kinetic energy meaning more successful collision happen leading to an increase in the rate of reaction.

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5

What do large pieces of solid have?

A small surface area to volume ratio

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6

What happens when the solid is broken up?

This will increase the surface area to volume ratio

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7

What is a reversible reaction?

When the reactants form a product. The products then react together to reform the reactants.

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