1. Top trumps –
Play top trumps with the different types of radiation.

2. Radioactivity Objectives
06 July 2019
Objectives
Be able to describe the 3 types of radioactivity, recall their penetration power and be able to write decay equations.
Keywords: background radiation, proton, neutron, electron, nucleus, alpha, beta, gamma, radioisotope, ionisation, isotope

3. OUTCOMES
ALL MUST be able to state the 3 types of radioactivity and describe what is meant by the term “Background Radiation”.
MOST SHOULD be able to describe what an Isotope is and describe how different radioactivity can penetrate different materials.
SOME COULD explain why different radioactivity can penetrate different materials and be able to describe radioactive decay using equations.

4. Nuclear materials Unstable isotopes break down. (Radioisotopes)
So radiation is given out.
The 3 types are: Alpha, Beta and Gamma.

5. Ionisation When atoms _________ electrons they become____________.
When atoms gain ___________ they become negative. When an atom has an unbalanced number of ________ and electrons it becomes ___________ and is called an __________.
ion charged electrons protons positive lose

6. Penetrating Power
Alpha particles are easy to stop, gamma rays are hard to stop. Particles that ionise other atoms strongly have a low
penetrating power, because they lose energy each time
they ionise an atom. (turn an atom into an ion)

7. Penetrating Power
Alpha particles are …….. to stop, ………. rays are hard to stop. Particles that ionise other atoms strongly have a low
……………… power, because they lose energy each time
they ionise an atom. What does “ionise” mean?