Term
|
Definition
| Particle radiating from the nucleus of some atoms. Identical to a helium nucleus. |
|
|
Term
|
Definition
| The smallest particle of matter still retaining the characteristics of the element; building block of matter. |
|
|
Term
|
Definition
| The total number of protons plus neutrons in an atomic nucleus. |
|
|
Term
|
Definition
| The number of protons in an atom; the number which identifies an element. |
|
|
Term
|
Definition
| Negative particle identical to an electron but radiating from a decaying nucleus; it is symbolized by e. |
|
|
Term
|
Definition
| A spontaneous or induced reaction that continues to feed itself and keep itself going. |
|
|
Term
|
Definition
| Mass of a nuclear substance that, if combined into one piece, would result in a spontaneous nuclear reaction. |
|
|
Term
|
Definition
| A unit of radiation equaling 3.7 x 1010 disintegrations per second. |
|
|
Term
|
Definition
| Tiny negatively charged particle circling the nucleus. 1/2,000 the mass of a proton or neutron; it is symbolized by e, or β. |
|
|
Term
|
Definition
| Matter made up of just one type of atom. |
|
|
Term
|
Definition
| Nuclear reaction producing lighter elements and energy by splitting. |
|
|
Term
|
Definition
| Nuclear reaction producing heavier elements and energy by synthesis. |
|
|
Term
|
Definition
| High-intensity bundle of energy being emitted from some decaying nuclei; it is symbolized by γ. |
|
|
Term
|
Definition
| Atom with the standard atomic number and chemical properties but different atomic weight and physical properties. |
|
|
Term
|
Definition
| A particle one-eighth the mass of protons; charge varies. Symbolized by K,μ, or Π. |
|
|
Term
|
Definition
| Neutral particle of nearly zero mass, produced by decaying nuclei and symbolized by ν. |
|
|
Term
|
Definition
| Neutrally charged particle in the nucleus of an atom. Has the same mass as the proton; it is symbolized by η. |
|
|
Term
|
Definition
| The center of the atom made up of protons and neutrons. |
|
|
Term
|
Definition
| Nuclear particle of the mass of an electron but with a positive charge. |
|
|
Term
|
Definition
| Positively charged particle in the nucleus of an atom; symbolized by ρ. |
|
|
Term
|
Definition
| Amount of radiation needed to produce 1.6 x 1012 positive or negative particles due to gamma rays passing through one gram of air. |
|
|
Term
|
Definition
| Combining, assembly of components. |
|
|
