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3 November, 15:15

A chemical reaction involves the rearrangement of atoms to form new molecules. During a chemical reaction, however, atoms are neither created nor destroyed.

Which of the following is true about the atoms involved in a chemical reaction?

A.

The total mass of the atoms involved in a chemical reaction always changes as the atoms are rearranged into new molecules.

B.

The total mass of the atoms involved in a chemical reaction will stay the same no matter how the atoms are rearranged.

C.

The total mass of the atoms involved in a chemical reaction will increase if a new compound is formed during the reaction.

D.

The total mass of the atoms involved in a chemical reaction will decrease if two molecules combine to form one single compound.

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Answers (2)
  1. 3 November, 15:20
    0
    The answer is B, their mass don't change
  2. 3 November, 17:45
    0
    the mass doesn't change
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