Created by Joe Llewellyn
over 5 years ago
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Question | Answer |
Atomic structure | Proton= mass 1 and charge 1+ Neutron= mass 1 and charge 0 Electron= 1/2000 and charge 1- |
Atomic number Mass number | Atomic number- number of protons Mass number- number of protons + neutrons |
Location in atom | Proton-nucleus Neutron-nucleus Electron-shell |
Isotopes | Two atoms of the same number of protons but a different number of neutrons. |
Ionisation | If an atom becomes an ion, it loses or gains an electron. If it loses an electron = 1+, if it gains an electron it becomes 1-. |
Radioactive decay | If a substance is classed as radioactive it means that they are unstable and continuously gives out radiation at random intervals. |
Becquerels | Amount of radioactive decay per second |
Alpha radiation | Charge=2+, Mass=4 amu, least penetration but most ionising. Helium Nucleus |
Beta radiation | Charge=-1, Mass= 1/2000, middle penetration out of the three, 2nd most ionising out if the three. Fast electron. |
Gamma radiation | Charge=0, Mass=0 amu, most penetration and least ionising. Electromagnetic radiation. |
Half life | The time taken for the radioactivity of specified isotope to fall to half life of its original value. |
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