In order to react, molecules of the reactants must collide. Choose the 3 answers below that describe reactant molecules that will react when they collide. Choose the 3 correct answers.



a
Molecules at higher temperatures.
b
Molecules at lower temperatures.
c
Molecules that are moving slowly.
d
Molecules that are moving quickly.
e
Molecules with higher energy.
f
Molecules with lower energy.

a

Molecules at higher temperatures.

d
Molecules that are moving quickly.

e
Molecules with higher energy.