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19 Cards in this Set
- Front
- Back
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periods
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a horizontal row in the periodic table, also called a series
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electron configuration
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the number and position of electrons in the energy levels of an atom
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metal
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an element that tends to give up electrons in a chemical reaction
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group
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another name for a family on the periodic table
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valence electrons
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the electrons in the outermost energy level of an atom
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metalloid
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a substance that has properties of both metals and nonmetals
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family
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a vertical column on the periodic table; also called a group
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nonmetal
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an element that tends to gain electrons in a chemical reaction; a poor conductor of heat and electricity
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malleable
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capable of being hammered or rolled
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alloys
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a homogeneous mixture of metals
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luster
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shining by reflecting light
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transuranium element
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an element with an atomic number higher than that of uranium
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alkali metals
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Group 1 (IA) elements that each have one valence electron
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ductile
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capable of being drawn into wire
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noble gases
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stable elements found in Group 18 (VIIIA) that have eight valence electrons
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transition elements
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strong metals in Groups 3-12
(IB through VIIIB) |
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periodic table
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a table of the elements arranged by atomic number into vertical columns called families or groups, and horizontal rows called periods
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periodic law
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the chemical properties of the elements are periodic functions of their atomic number
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halogens
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reactive elements in Group 17 (VIIA) that have seven valence electrons
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