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25 September, 06:26

What must molecules do to react?

a. Molecules must heat up

b. Molecules must collide

c. Molecules must expand to fill their container

d. Molecules must interact with a catalyst

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Answers (2)
  1. 25 September, 06:45
    0
    C. because they are solid
  2. 25 September, 06:48
    0
    B:Molecules must collide.

    Why: They have to collide so the chemical bonds can break.
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