Question

How can a chemical change be sped up?

Answer 1

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By chemical "change", I believe you meant chemical Reaction.

A chemical reaction can be sped up by many factors. Here's a list of the most common ways to speed up a chemical reaction:

Increase the temperature in Endothermic reactions (Reactions that absorb energy, or become cold)

Decrease the temperature in Exothermic reactions (Reactions that release energy, or become hot)

Add a catalyst (A substance that reduces activation energy, speeding up the reaction)

Increase the concentration of reactants

Increase the concentration of catalysts

Increasing the surface area of reactants (If it's a solid, try crushing it)

HOPE IT HELPS YOU !!

Answer 2

By adding catalysts and promotees