## AQA GCSE Drawing and interpreting nuclear fission diagrams

**Drawing and interpreting nuclear fission diagrams**

You are expected to be able to draw and interpret diagrams like the one below

**Lets try drawing a diagram for the following equation**

** **

First we will draw a slow moving neutron being absorbed by the U-235 nucleus, then draw the two daughter nuclei Ba-141 and Kr-92, finally draw 3 neutrons leaving.

You should be able to draw simplified block diagrams like this, provided it is clearly labelled such as the one above. If you want to you can draw the tiny circles to represent the protons and neutrons, but this is probably not needed.

**Draw a diagram for a chain reaction. **

In each nuclear fission reaction, 1 neutron is used and 3 are produced. These 3 neutrons will go on and cause further fission reactions.

We can simplify this diagram to leave out the daughter nuclei.

In the first fission reaction, 3 neutrons are produced. These 3 neutrons will then go on and cause further fission reactions as shown

**Practice Questions**

1. Draw a diagram to represent the following equation

2. Draw a diagram to represent the following equation

3. Draw an example of a chain reaction showing 2 neutrons being produced in a fission reaction.

Absorption and Emission of EM Radiation

JJ Thomson and Plum pudding model

Ernest Rutherford and the Nuclear Model

Niels Bohr changing the Nuclear Model

Discovering the Proton and Neutron

Measuring radiation from radioactivity

Radiation types and properties

Random nature of radioactive decay

Radioactive contamination or irradiation

Hazards of contamination and irradiation

Studies on the effects of radiation on humans

Different half lives of radioactive isotopes

Nuclear Fission Chain Reaction

Writing nuclear fission equations