Term
| Although typically the nucleus is less than one ten-thousandth the size of the atom, it contains what percentage of the mass of the atom? |
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Definition
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Term
| What force holds the nucleus together? |
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Definition
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Term
| The time required for half the atoms of a radioactive nuclide to decay. |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| The difference betweeen the mass of an atom and the sum of the masses of its protons, neutrons, and electrons. |
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Definition
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Term
| The energy released when a nucleus is formed from nucleons. |
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Definition
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Term
| The most stable nuclei have this ration of neutrons to protons. |
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Definition
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Term
| Has it been found that the most stable nuclide have an even or odd number of nucleons? |
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Definition
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Term
| A reaction that affects the nucleus of an atom. |
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Definition
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Term
| A change in the identity of a nucleus as a result of a change in the number of its protons. |
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Definition
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Term
| What did Becquerel do on March 1, 1896 and why was it important? |
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Definition
| He wrapped a photographic plate with a lightproof covering and placed a uranium compound on top of it. Evne though he did not place it in sunlight, the plate was still exposed. This led to the discovery of radioactivity. |
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Term
| The spontaneous disintegration of a nucleus into a slightly lighter nucleus, accompanied by emission of particles, electromagnetic radiation, or both. |
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Definition
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Term
| All of the nuclides beyond what atomic number on the periodic table are unstable and radioactive. |
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Definition
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Term
| The charge of an alpha particle |
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Definition
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Term
| Two protons and two neutrons bound together and emitted from the nucleus during some kinds of radioactive decay. |
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Definition
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Term
| An electron emitted from the nucleus during some kinds of radioactive decay. |
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Definition
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Term
| A particle that has the same mass as an electron, but has a positive charge, and is emitted during some kinds of radioactive decay. |
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Definition
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Term
| High-energy electromagnetic waves emitted from a nucleus as it changes from an excited state to a ground energy state. |
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Definition
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Term
| Occurs when an inner orbital electron is captured by the nucleus of its won atom. |
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Definition
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Term
| What is the half-life of Carbon-14? |
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Definition
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Term
| What is the half-life of Uranium-238? |
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Definition
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Term
| A series of radioactive nuclides produced by successive radioactive decay until a stable nuclide is reached. |
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Definition
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Term
| The heaviest nuclide of a decay series. |
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Definition
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Term
| The nuclides produced by the decay of the parent nuclides. |
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Definition
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Term
| Elements with more than 92 protons in their nuclei. |
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Definition
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Term
| Why is Carbon-14 important? |
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Definition
| It can be used to estimate the age of organic material up to about 50000 years old. |
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Term
| The process by which the approximate age of an object is determined based on the amount of certain radioactive nuclides present. |
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Definition
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Term
| Process in which a very heavy nucleus splits into more-stable nuclei of intermediate mass. |
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Definition
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Term
| A reaction in which the material that starts the reaction is also one of the products and can start another reaction. |
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Definition
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Term
| How many neutrons are given off when uranum-235 fission occurs? |
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Definition
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Term
| These use heat from nuclear reactors to produce electrical energy. |
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Definition
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Term
| The minimum amound of nuclide that provides the number of neutrons needed to sustain a chain reaction. |
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Definition
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Term
| These use controlled-fission chain reactions to produce energy or radioactive nuclides. |
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Definition
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Term
| Light-mass nuclei combine to form a heavier, more stable nucleus. |
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Definition
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Term
| Explain how to draw a nuclear symbol. |
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Definition
| Mass number over atomic number in front of the symbol |
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Term
| Write the equation that shows the equivalency of mass and energy. |
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Definition
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Term
| Where and when did the worse nuclear accident in the United States occur? |
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Definition
| Three Mile Island in Pennsylvania on March 28, 1979. |
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Term
| Where and when did the worse nuclear accident in the world occur? |
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Definition
| April 26, 1986 in the former Soviet Union |
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Term
| Ultimately, what was the main cause of the biggest three nuclear accidents (Three Mile Island, Chernobyl, and Tokiamura, Japan) in world history? |
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Definition
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Term
| What would be the products of the alpha decay of Uranium-233? |
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Definition
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Term
| What would be the products of the beta decay of Magnesium-24? |
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Definition
| Aluminum-24 and a beta particle |
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Term
| What would be the products of the positron decay of Potassium-38? |
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Definition
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Term
| What would be the product if Gallium-67 decays by electron capture? |
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Definition
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Term
| The stable nuclei cluster over a range of neutron-proton ratios. |
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Definition
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Term
| The numbers of nucleons that represent completed nuclear energy levels-2,8,20,28,50,82 and 126. |
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Definition
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Term
| The difference between the mass of an atom and the sum of the masses of its protons, neutrons, and electrons. |
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Definition
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Term
| The energy released when a nucleus is formed from nucleons. |
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Definition
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Term
| A reaction that affects the nucleus of an atom. |
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Definition
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Term
| Nucleons exist in different energy levels, or shells, in the nucleus. |
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Definition
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Term
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Definition
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Term
| The process by which the approximate age of an object is determined based on the amount of certain radioactive nuclides present. |
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Definition
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Term
| The general term for any isotope of any element; another term for an atom that is identified by the number of protons and neutrons in its nucleus. |
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Definition
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Term
| A change in the identity of a nucleus as a result of a change in the number of its protons. |
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Definition
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Term
| Bombardment of stable nuclei with charged and uncharged particles. |
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Definition
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Term
| The particles or electromagnetic radiation emitted from the nucleus during radioactive decay. |
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Definition
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Term
| The spontaneous disintegration of a nucleus into a slightly lighter and more stable nucleus, accompanied by an emission of particles, electromagnetic radiation, or both. |
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Definition
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Term
| Unstable nucleus that undergoes radioactive decay. |
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Definition
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Term
| An element with more than 92 protons in its nucleus. |
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Definition
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Term
| A device that uses exposure of film to measure the approximate radiation exposure of people working with radiation. |
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Definition
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Term
| An instrument that detects radiation by counting electric pulses carried by gas ionized by radiation. |
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Definition
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Term
| A radioactive atom that is incorporated into a substance so that movement of the substance can be followed by a radiation detector. |
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Definition
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Term
| The quantity of ionizing radiation that does as much damage to human tissue as is done by 1 roentgen of high voltage X rays. |
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Definition
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Term
| A unit used to measure nuclear radiation; equal to the amount of radiation that produces 2E9 ion pairs when it passes through a cubic centimeter of dry air. |
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Definition
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Term
| An instrument that converts scintillating light to an electric signal for detecting radiation. |
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Definition
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Term
| Neutron-absorbing rods that help control a nuclear reaction by controlling the number of free electrons. |
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Definition
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Term
| A material used to slow down the fast neutrons produced by fission.[image][image] |
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Definition
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