| atomic weight |
The atomic weight of an atom is a measure of how much mass an atom has. The atomic weight is calculated by adding the number of protons and neutrons together. Atomic masses are not listed as whole numbers on the periodic table because atoms can come in forms with different amounts of neutrons. The atomic weight reported for any particular element is an average weight of all the known forms of that element.
출처: www.biologylessons.sdsu.edu/classes/lab2/glossary....
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| atomic weight |
average of the mass numbers of all of the isotopes of an element.
출처: paramedicine.wikispaces.org/Medical+Terminology
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| atomic mass |
number the sum of the number of protons and neutrons in the nucleus of an atom.
출처: paramedicine.wikispaces.org/Medical+Terminology
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| atomic energy |
energy released in nuclear reactions. When a neutron splits an atom's nucleus into smaller pieces it is called fission. When two nuclei are joined together under millions of degrees of heat it is called fusion.
출처: www.nrdc.org/reference/glossary/a.asp
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| atom |
the smallest unit of a chemical element, made up of a nucleus surrounded by electrons
출처: education.jlab.org/beamsactivity/6thgrade/vocabula...
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| atom | a heavy gray-white metallic element |
|---|---|
| atom | a rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys |
| atom | a hard brittle blue-gray or blue-black metallic element that is one of the platinum metals |
| atom | a heavy brittle metallic element of the platinum group |
| atom | a heavy precious metallic element |
| atom | a soft yellow malleable ductile (trivalent and univalent) metallic element |
| atom | a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas |
| atom | a heavy silvery toxic univalent and bivalent metallic element |
| atom | a soft gray malleable metallic element that resembles tin but discolors on exposure to air |
| atom | a soft heavy toxic malleable metallic element |
| atom | a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically) |
| atom | a radioactive metallic element that is similar to tellurium and bismuth |