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Matter and radiation (Forces (Strong nuclear force (Pulls nucleons…
Matter and radiation
Forces
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weak nuclear force
converts protons into neutrons by emitting a positron and neutrino ( or an electron and an antineutrino. this allows certain complex nuclei to form
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nuclear model 
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Nuclide notation
Isotopes: same # of protons and electrons but a different # of neutrons, therefore different mass
radiation
Beta decay
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Neutrinos were hypothesised because their was not enough energy being released. therefore another particle must exist that is carrying off the energy
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antimatter
for every particle, an antiparticle also exists that has equal mass but opposite charge ( an anti-electron is called a positron)
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