Chemistry, 06.03.2020 19:15 sarahbug56

Evidence that a chemical change has occurred includes a .

a. change in state
b. change in size
c. change in shape
d. change in color

An oven's high temperature speeds up chemical reactions because heat .

a. lowers the activation energy
b. activates catalysts
c. makes more molecules collide with each other
d. reduces the particle size of the reactants

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Evidence that a chemical change has occurred includes a .

a. change in state
b. cha...

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