1. Neutron + Electron - Copy and label this diagram Nucleus Proton

2. ParticleCharge Relative Mass Protons+11 Neutrons01 Electrons0.0005 Copy and complete this table

3. Periodic table

5. Mass number Proton number

6. Periodic table

8. Mass number Proton number

9. Periodic table

11. Mass number Proton number

12. How many protons, neutrons and electrons do the following atoms have… a.Beryllium b.Calcium c.Carbon d.Zinc e.Tin f.Chlorine Use your periodic table

13. Different elements are defined by the number of protons in the nucleus of their atoms. An isotope of an element has more (or less) neutrons in its nucleus than usual For example: Chlorine can have either 17 or 19 neutrons and so its mass number is in between them both Isotopes

14. Alpha radiation -  Description: 2 neutrons, 2 protons (helium nuclei) Electric Charge: 2+ Relative Atomic Mass: 4 Penetration power: Stopped by paper or a few cm of air Ionisation effect: Strongly ionising

15. Beta radiation -  Description: High energy electron Electric Charge: Relative Atomic Mass: 1/1860th Penetration power: Stopped by few mm of aluminium Ionisation effect: Weakly ionising

16. Gamma radiation -  Description: High energy electromagnetic radiation Electric Charge: 0 Relative Atomic Mass: 0 Penetration power: Reduced by several cm’s of lead or several metres of concrete Ionisation effect: Very weakly ionising z