Question

Nuclear fusion is the splitting of atomic nuclei into smaller fragments; nuclear fission is the opposite of this process.

Answer 1

TRUE

common phenomenon for all unstable uranium atoms

q3 not sure maybe The atomic masses of elements X and Y will always equal the exact atomic mass of Z.

high temperatures

FALSE

Answer 2

Answer:

given below.

Explanation:

1) True

In nuclear fusion atomic nuclei splits and in nuclear fission atomic nuclei combines.

2) correct answer is option A

self sustaining reaction product causes new reactions.

3) correct answer is option A

in nuclear fission the combined atomic mass of daughter nuclei is more than the parent nuclei.

4) correct answer is option B.

high temperature is the must requirement for fusion to take place because it gives hydrogen atoms enough energy to overcome the electrical repulsion between the protons.

5) True

uranium-235 is used in nuclear reactors where as plutonium-239 is used in making of nuclear weapons.