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Which statement about the balanced equations for nuclear and chemical changes is correct?

A chemical equation is balanced according to a mass number. A nuclear equation is balanced according to the total mass before and after the change.
Both are balanced according to the mass number of each element before and after the change.
A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change.
Both are balanced according to the total mass before and after the change.

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
24 days ago

The most accurate statement is:

**A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change.**

This means that in a nuclear reaction, both the mass number and atomic number must be conserved, while in a chemical reaction, the total mass of the reactants must equal the total mass of the products, consistent with the conservation of mass.