Atomic Structure

• Alpha radiation

  .Made up of 2 protons and 2 neutrons

  .Has a relative charge of +2

  .Is used in smoke alarms
• Beta radiation

  .A fast moving electron

  .Has a relative charge of -1
• Gamma radiation

  .A high frequency electromagnetic wave

  .Has zero charge

  .Can penetrate a thick sheet of aluminium
• Radioactive decay

  When an unstable nucleus randomly emits ionising radiation to become more stable over time
• Ways to detect radiation

  .Geiger counter (Geiger-Muller tube)

  .Cloud chamber

  .Photographic film
• Types of nuclear safety precautions

  .Handling

  .Usage

  .Reduced exposure

  .Storage