1. Agree Learning Outcomes:
Topic: P6.1.3 Nuclear Equations
Spec link: P
Time: 70 mins
Recorded Assessment:
Review:
Exam questions
Plenary questions
Present New Knowledge:
Agree Learning Outcomes:
1.All to be able to explain how Alpha and Beta Particles decay
2. To understand how equations work
Apply To Demonstrate:
Questions on Alpha decay
Questions on Beta Decay
Problem on Uranium
Construct Meaning:

2. As you enter the room….
House points to whoever gets the highest score before the lesson starts!

3. Title: Nuclear Equations
Learning Objective:
Complete equations for alpha, beta and gamma decay

4. Alpha Decay

5. Alpha Radiation

7. 23290 Th 42 He + ??Ra 21684 Po ? + 21282 Pb Practice…...
228 and 88 are the missing numbers
A helium nucleus is missing

8. 23290 Th 42 He + 22888Ra 21684 Po 42 He + 21282 Pb Practice…...
228 and 88 are the missing numbers
A helium nucleus is missing

9. Beta Decay

12. Practice
146 C –1 e + ?? N
24194 Pu ? Am
14 and 7 are the missing numbers
An electron (Beta) is missing from number 2

13. 146 C 0 –1 e + 147 N 24194 Pu 0 –1 e + 24195 Am Practice
14 and 7 are the missing numbers
An electron (Beta) is missing from number 2

14. No change in mass number or atomic number

15. Clue: write out all three equations in full
A nuclear problem...
If I start with U and it undergoes alpha decay, followed by 2 Beta decays what element will I end up with?
Clue: write out all three equations in full

16. Final element has 92 protons
23892U He X
23490X –1e Y
23491Y –1e Z
Final element has 92 protons
so it must be Uranium, U-234

17. Worksheet
Have a go at the worksheet and complete the missing elements/values.
You will need a periodic table

18. Plenary - choose Alpha/Beta or Gamma
Which has the largest mass?
Alpha

19. Which has zero electric charge
Gamma

20. Which travels at the speed of light?
Gamma

21. Which is a high speed electron?
Beta

22. Which causes the most ionisation
Alpha

23. Which consists of 2 protons and 2 neutrons?
Alpha

24. Which is emitted when a neutron changes into a proton?
Beta

25. Which is the most penetrating?
Gamma