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| Questão | Responda |
| Where is nuclear radiation emitted from? | The nucleus |
| What is the diameter of a nucleus? | 10^-15 m |
| What is the diameter of an atom? | ~10^-10 m |
| 10^-10 m is also known as a ..... | Angstrom (Å) |
| What is the equation for alpha decay? | (a)X(z) -> (a-4)Y(z-2) + (4)α(2) (Unstable nucleus -> new daughter nucleus + alpha particle) |
| In alpha decay, what are conserved? | Charge and mass |
| What is the equation for beta- decay? | (a)X(z) -> (a)Y(z+1) + (0)β(-1) + ̅νe (Unstable nucleus -> new daughter nucleus + beta- particle + electron antineutrino) |
| What is the equation for beta+ decay? | (a)X(z) -> (a)Y(z-1) + (0)β(1) + ν (Unstable nucleus -> new daughter nucleus + beta+ particle + electron neutrino) |
| Basics on Neutrino | Very small mass and no charge Hypothesized before detected, as from certain interactions momentum wasn't conserved, so there had to be another particle |
| What is gamma decay? | Gamma radiation emitted from an excited nucleus after alpha or beta decay |
| What properties does gamma have as electromagnetic radiation? | Mass-less Uncharged Travels at speed of light |
| What is a positron? | Basically an "anti-electron" as it's an antiparticle of an electron. It has the same mass of an electron and charge= +e |
| What can we use to detect radiation? | A Geiger counter (which uses a Geiger-Muller tube) |
| What is the composition of an alpha particle? | 2 protons, 2 neutrons, no electrons (same as helium nucleus) |
| Rewrite beta- and beta+ decay in terms of protons and neutrons | beta- : n -> p + (0)β(-1) + ̅νe beta+ : p -> n + (0)β(1) + ve |
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