A catayst which increases the rate of a chemical reaction does so by

Question

Answer 1

A catayst which increases the rate of a chemical reaction does so by

increasing the surface area of the reactants
increasing the pressure on the system
decreasing the temperature at which the reaction occurs
decreasing the activation energy of the reaction ✓

Explanation

A catalyst gives the reaction an easier path. This path needs less energy to start, so more particles can react.

So a catalyst works by decreasing the activation energy. It does not change the pressure or the surface area, and it does not lower the temperature.

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