Question

In a nuclear reaction, which is the same before and after the change? (1 point)

the types of atoms

the total number of protons

the mass

the number of alpha particles

Answer 1

In a nuclear reaction, the quantity that remains the same before and after the change is **the total number of protons**. This is because nuclear reactions, such as alpha decay, beta decay, and fission or fusion processes, conserve the overall atomic number, which corresponds to the total number of protons in the reacting particles.

Let me know if you need any further explanation!