Question

describing the principles of nuclear reactions
which statements describe nuclear reactions? check all that apply.
nuclear reactions involve the nuclei of atoms.
nuclear reactions involve the electrons of atoms.
the products of nuclear reactions are lighter than the reactants.
the products of nuclear reactions are heavier than the reactants.
fission produces energy, while fusion requires energy.

Explanation:

• Nuclear reactions involve the nuclei of atoms. In nuclear reactions, changes occur in the atomic nucleus.
• The products of nuclear reactions can be lighter (in fission, where a heavy nucleus splits) or heavier (in fusion, where light nuclei combine) than the reactants.
• Fission releases energy (e.g., in nuclear power plants), and fusion also releases energy (e.g., in the sun).

Answer:

Nuclear reactions involve the nuclei of atoms.