Why does every chemical reaction require a certain amount of activation energy? A. Energy is released when the reactants begin to react

B. Energy loss to the environment during the reaction must be replaced

C. Forming the activated complex requires energy

D. The products have more potential energy than the activated complex

E. The reactants have less potential energy than the products

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The activation energy enables the reactants to move and overcome forces of repulsion. The subsequent collisions between atoms facilitates the breaking of existing bonds and the formation of new ones.

Option (C) is the correct answer.

1. they vary with a higher number because boiling is way hotter than melting

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.