AS Level Physics - 11.1 Atoms, Nuclei and Radiation

**This Powerpoint specifically uses the Cambridge AS Level international Syllabus (9702) and covers all criteria for – Unit 11.1 Atoms, Nuclei and Radiation
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Students should be able to -

1 infer from the results of the α-particle scattering experiment the existence and small size of the nucleus

2 describe a simple model for the nuclear atom to include protons, neutrons and orbital electrons

3 distinguish between nucleon number and proton number

4 understand that isotopes are forms of the same element with different numbers of neutrons in their nuclei

5 understand and use the notation A Z X for the representation of nuclides

6 understand that nucleon number and charge are conserved in nuclear processes

7 describe the composition, mass and charge of α-, β- and γ-radiations (both β– (electrons) and β+ (positrons) are included)

8 understand that an antiparticle has the same mass but opposite charge to the corresponding particle, and that a positron is the antiparticle of an electron

9 state that (electron) antineutrinos are produced during β– decay and (electron) neutrinos are produced during β+ decay

10 understand that α-particles have discrete energies but that β-particles have a continuous range of energies because (anti)neutrinos are emitted in β-decay

11 represent α- and β-decay by a radioactive decay equation of the form 238 92U T " 234 90 h + 24α

12 use the unified atomic mass unit (u) as a unit of mass

**Every Powerpoint includes learning objectives, a starter and plenary, suitable activities and review questions with mark scheme. We also provide a free pdf version of the file so it can easily be printed for students as a handout or uploaded to the school VLE system
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