What you’ll learn12 learning objectivesChoose one objective for a focused lesson, or study the complete topic.11.1.1The results of the α-particle scattering experiment the existence and small• infer from the results of the α-particle scattering experiment the existence and small size of the nucleusSyllabus objective11.1.2A simple model for the nuclear atom to include protons, neutrons and orbital• describe a simple model for the nuclear atom to include protons, neutrons and orbital electronsSyllabus objective11.1.3Nucleon number and proton number• distinguish between nucleon number and proton numberSyllabus objective11.1.4Isotopes are forms of the same element with different numbers of neutrons in• understand that isotopes are forms of the same element with different numbers of neutrons in their nucleiSyllabus objective11.1.5The notation A Z X for the representation of nuclides• understand and use the notation A Z X for the representation of nuclidesSyllabus objective11.1.6Nucleon number and charge are conserved in nuclear processes• understand that nucleon number and charge are conserved in nuclear processesSyllabus objective11.1.7The composition, mass and charge of α-, β- and γ-radiations (both β–• describe the composition, mass and charge of α-, β- and γ-radiations (both β– (electrons) and β+ (positrons) are included)Syllabus objective11.1.8An antiparticle has the same mass but opposite charge to the corresponding• understand that an antiparticle has the same mass but opposite charge to the corresponding particle, and that a positron is the antiparticle of an electronSyllabus objective11.1.9That (electron) antineutrinos are produced during β– decay and (electron)• state that (electron) antineutrinos are produced during β– decay and (electron) neutrinos are produced during β+ decaySyllabus objective11.1.10Α-particles have discrete energies but that β-particles have a continuous• understand that α-particles have discrete energies but that β-particles have a continuous range of energies because (anti)neutrinos are emitted in β-decaySyllabus objective11.1.11Α- and β-decay by a radioactive decay equation of the form UT h92 238 90 234• represent α- and β-decay by a radioactive decay equation of the form UT h92 238 90 234 2 4" + αSyllabus objective11.1.12The unified atomic mass unit (u) as a unit of mass• use the unified atomic mass unit (u) as a unit of massSyllabus objective