Why will increasing the temperature of a reaction speed up the reaction?

the activation energy for the reaction is lowered
the heat of reaction is increased
there are more effective collisions between molecules
none of these

Answer:
First person to answer got it right!

Temperature is a direct measurement relative to the atomic activity of the material being measured.
More effective collisions between molecules
Just as it's easier to stir water than ice. Heat seperates the molecules and atoms. Choose C-there are more effective collisions between molecules.

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