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Nata [24]
3 years ago
13

What must happen before a chemical reaction can begin?

Biology
2 answers:
erik [133]3 years ago
8 0
In order for a chemical reaction to being, two reactants must come into contact with one another. Reactions<span> occur when two or more molecules interact and the molecules change. Bonds between atoms are broken and created to form new molecules</span>
dezoksy [38]3 years ago
7 0
Yes two reacting substances must collide.
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