1. Nuclear Equations

2. Homework – GCSE Question on Ernest Rutherford's experiment hand in today.

3. Engager Self mark your homework in red pen amend if needed

4. To understand nuclear equations and to calculate them
Progress
To calculate half-life of different radioactive isotopes.
To construct nuclear equations.
To justify the type of emitted radioactive isotope.

5. To demonstrate good progress in this lesson
Name
Will…
Tom B
To calculate half-life of different radioactive isotopes
Jessica A
To construct nuclear equations.
Szymon T
To justify the type of emitted radioactive isotope.
The Honley Learning Mindset Advocate for this lesson is…
Matthew – will show resilience by not giving up if he finds something difficult.

6. Recap Types of Radioactivity
Press the buttons to show the three types of radioactivity...

7. Connector Alpha Radiation ()

8. He  Alpha Radiation () What is an Alpha particle?
Alpha radiation is formed when an unstable nucleus decays, emitting an alpha particle.
What is an Alpha particle?
REMEMBER Alpha particles have an atomic mass of 4 and a relative charge of +2.
Alpha particles are made from 2 Proton and 2 Neutrons
This can be written in either of two ways: 4 2 He 4 2  or

9. Example of Alpha Radiation ()+ He 4 2 Rn
222 86 Ra
226 88
Radium - unstable metal
Radon - more stable gas
Alpha particle
When a radioactive atom emits an alpha particle, its mass number decreases by four and its atomic number decreases by two.
You Must know this

10. He Ra Th He Rn Ra + + Alpha Radiation ()
Grab a white board and complete these two examples
Thorium becomes radium: + He 4 2 Ra
224 88 Th
228 90
Radium becomes radon... + He 4 2 Rn
220 86 Ra
224 88

11. Example of Beta Radiation ()

12. e  -1 -1 Beta Radiation () What is Beta Radiation?
Beta radiation is a high energy electrons it has a negative charge and the mass is negligible
Beta particles are made when a neutron changes into a proton and an electron. The proton stays in the nucleus and the electron is emitted as a beta particle.
YOU MUST KNOW THIS
This can be written in either of the two forms below: -1 e -1 

13. e N C e F O e He H + + + Beta Radiation ()
When a radioactive atom emits a beta particle, its mass number remains unchanged and its atomic number increases by one (as a neutron changes into a proton).
Example: Carbon-14 becomes nitrogen-14. + e -1 N 14 7 C 6
Complete these two examples
Example 1
Example 1
Example 1 + e -1 F 18 9 O 8
Example 1
Example 1
Example 2 + e -1 He 3 2 H 1
Example 2
Example 2
Example 2
Example 2

14. Gamma Rays ()

15. Gamma Rays ()
Gamma rays are one of the seven types of electromagnetic wave which form the electromagnetic spectrum.
Gamma rays have the highest frequency and shortest wavelength of all the seven types of electromagnetic wave.
Wavelength

16. Gamma Rays ()
As gamma rays are electromagnetic waves, they have zero mass and zero charge. A gamma ray is written as: 
When a gamma ray is emitted from an atom, it has no effect on either the atomic mass or atomic number. It does however increase the stability of the nucleus, as it reduces its energy level. +  Pa
234 91

17. Worksheet on Nuclear equations

18. Securing activity – complete the GCSE Question

19. Self Marking