AnswersIA-Chemistry A Survey of Chemistry AWriting and Balancing Chemical EquationsQuestion 6
6
AssignmentMultiple Choice

Writing and Balancing Chemical Equations

Question 6 • IA-Chemistry A Survey of Chemistry A

How do balanced chemical equations show the conservation of mass?

Answer
A
They show that the atoms in the products may be different than the reactants as long as the mass does not change.
B
They show that the atoms in the products are the same as in the reactants, but the number of atoms must change.
C
They show that the number of atoms of each element is the same in the products and reactants.

Explanation

A balanced chemical equation has the same number of atoms of each element on both sides. Atoms are rearranged during a chemical reaction, but they are not created or destroyed, so the total mass remains the same. Choice C correctly states that the number of atoms of each element is the same in the products and reactants.

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