Question

Which of these statements are the same for both nuclear reactions and chemical reactions? Check all that apply.

Both can be represented by balanced equations.

Both involve changes to electron arrangements in atoms.

Both involve a change in energy.

Both result in a change in the identities of elements.

Answer 1

Correct:
- Both can be represented by balanced equations.
- Both involve a change in energy.

Why the others are not the same:
- "Both involve changes to electron arrangements" — true for chemical reactions (bond making/breaking), but nuclear reactions change the nucleus (not the electron cloud), although they can emit or absorb electrons in processes like beta decay (these are nuclear, not chemical, electron rearrangements).
- "Both result in a change in the identities of elements" — true for nuclear reactions (proton number can change) but not for chemical reactions, which rearrange atoms without changing element identities.