Radioactivity- Fission

Question 1

Fission is the splitting of an atomic _______ into two smaller ______ and two or more _________ releasing energy.

Answer 1

Fission is the splitting of an atomic nucleus into two smaller nuclei and two or more neutrons releasing energy.

Question 2

In _______ _____ ________ this is induced in uranium-235 or plutonium-239 by firing a
neutron at it.

Answer 2

In nuclear power stations this is induced in uranium-235 or plutonium-239 by firing a
neutron at it.

Question 3

Fission is a _____ reaction as the released ________ trigger more atoms to decay.

Answer 3

This is a chain reaction as the released neutrons trigger more atoms to decay.

Question 4

_______ waste is difficult to dispose of as it is radioactive.

Answer 4

Nuclear waste is difficult to dispose of as it is radioactive.