Question

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1. in a chemical reaction, molecules in the substance ________

o stay the same
o change
o
o

Explanation:

In a chemical reaction, the molecular structure of substances undergoes a transformation. New substances with different molecular compositions are formed. For example, in the reaction of hydrogen and oxygen to form water (\(2H_2 + O_2
ightarrow 2H_2O\)), the hydrogen (\(H_2\)) and oxygen (\(O_2\)) molecules change to form water (\(H_2O\)) molecules.

Answer:

B. change