| Term | Definition |
|---|
| electrons | X-rays originate from |
| nucleus | Gamma rays originate from |
| atomic number | Protons in a nucleus represented by the letter Z |
| nucleon | any particle found in the nucleus |
| atomic mass | sum of the protons and neutrons represented by the letter A |
| isotope | the same number protons |
| isotone | the same number neutrons |
| isobar | the same mass number |
| ionizing | removing an electron |
| Beta Minus | excited nucleus decays and moves 1 space left and 1 space up on the chart of nuclides |
| Beta Minus | Parent nuclide and daughter nuclide are isobars. Z increases by 1. |
| Neutron Decay | parent nuclide and daughter nuclide are isotopes. Mass # decreases by 1 |
| Beta Minus Decay | Too many neutrons for the # protons. A neutron is converted to proton and nucleus ejects particle |
| Alpha Decay | Excited nucleus decays and moves 2 spaces down and 2 spaces to the left on the Chart of Nuclides |
| Beta + or Positron Decay | Low Neutron to proton ratio. Proton changes changes to neutron and nucleus ejects a particle |
| Gamma Decay | A newly formed nucleus is left excited. It releases energy but does not eject any particles. |
| Neutron Decay | High neutron to proton ratio. Nucleus ejects particle making A decrease by 1 and Z remains constant |
| Electron Capture | Excited nuleus decays and moves 1 space right and 1 space down on the Chart of Nuclides. The decay emits X-rays. |
| Proton Decay | Low neutron to proton ratio. Nucleus ejects particle making A decrease by 1 and Z decrease by 1. |
| Beta + or Electron Capture | Parent nuclide and daughter nuclide are isobars. The atomic # decreases by 1 |
| Proton Decay | Parent nuclide and daughter nuclide are isotones. A decreases by 1. |
| Electron Capture | Too many protons for the number neutrons. A proton is converted to neutron. X-rays are emitted. |
| Internal Conversion | A newly formed nucleus is left excited. A gamma ray from the excited nucleus hits an orbiting electron. The orbiting electron is ejected |
| Tangent | ratio of the opposite to the adjacent side of a right-angled triangle |
| Sin | ratio of the opposite side to the hypotenuse of a right-angled triangle |
| Cosin | adjacent/hypotenuse |
| Area of sphere | 4pi r² |
| Area of cylinder | pi r² + 2pi r h |
| Volume of sphere | (4/3)pi r³ |
| Area of circle | pi r² |
| How many feet in a meter | 3.3 |
| How many km in a mile | 1.61 |
| What is the density of water | 1 gram/milliliter or 1 gram/cm³ |
| How many pounds in a kg | 2.2 |
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