A student listed the characteristics of chemical and nuclear reactions.

Chemical and Nuclear ReactionsX Y
Changes the identity of the element Does not change the identity of the element

Which of these statements best explains the identity of Reaction X? (5 points)
It is a nuclear reaction because the identity of elements changes when there is a change in the number of protons and neutrons.
It is a chemical reaction because the identity of elements change when there is a change in the mass of the atoms involved.
It is a chemical reaction because the identity of elements change when there is a change in the overall energy of the system.
It is a nuclear reaction because the identity of elements change when there is a change in the number of outermost electrons.