Question

PLEASE HELP ME!

Which statement about nuclear reactions is NOT true?
a.
Nuclear power plants use fission of uranium.
b.
In fission, the total mass of the reactants equals the total mass of the products.
c.
In fission, nuclei are split, and in fusion, nuclei are combined.
d.
Energy as heat and light in the sun are generated by hydrogen fusion reactions.

Answer 1

b. In fission, the total mass of the reactants equals the total mass of the products.

Step-by-step explanation:

In a nuclear reaction, the total mass of the reactants does not equal to the total mass of the products.

This is because mass is converted to energy in a nuclear reaction.

• It is true that nuclear power plants use fission. Uranium is the fuel in most reactors used to generate electricity.
• During nuclear fission, an unstable nucleus is split and in fusion, atoms are combined together.
• Heat and light is produced in the sun which are generated by hydrogen fusion reactions.