Question

conservation in chemical reactions quick check
which statement is true regarding a chemical reaction? (1 point)
the total number of atoms changes, so mass is conserved in the reaction
the total number of atoms does not change, so mass is conserved in the reaction
even if the total number of atoms does not change, mass may not be conserved in the reaction
even if the total number of atoms changes, mass may not be conserved in the reaction

Explanation:

According to the law of conservation of mass in chemical reactions, atoms are neither created nor destroyed. The total number of atoms of each element remains the same before and after the reaction. Since mass is directly related to the number of atoms (as each atom has a specific mass), if the number of atoms doesn't change, mass is conserved.

Answer:

The total number of atoms does not change, so mass is conserved in the reaction.