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| the arrangement of the atoms in a molecule or of the electrons in an atom |
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| the bond formed by two atoms which share a pair of electrons |
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| the bond formed by two ions with opposite charges (electrons are “stolen”) |
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| that part of an atom where electrons are most likely to be found |
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| a group of atoms that remain unchanged and behave as a unit on most reactions |
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| the combining ability of an atom or radical based on the number of electrons it will lose, add, or share during a reaction |
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| a substance that causes or speeds up a chemical reaction while the substance remains unchanged |
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| referring to a substance that burns or destroys flesh |
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| any chemical compound which will conduct an electric current when it is in a liquid state or when it is dissolved in water |
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| a hydrogen ion combined with a molecule of water |
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| the scale used to classify the strength of acid and basic solutions |
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| the formation of a compound by the combining of two of more elements in one or more chemical reactions |
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| the heavy, radioactive metals with atomic numbers 90 - 103 |
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| a nonmetallic element that combines readily with most metals |
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| the rare earth metals with atomic numbers 58 – 71 |
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| a Russian chemist who devised the periodic table |
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| an element that has properties of both a metal and a nonmetal |
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| a metallic element with an incomplete inner electron level |
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