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18 Cards in this Set
- Front
- Back
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Alkali Metals |
Group 1, highly reactive |
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Allotropes |
Each of the physical forms in which an element can exist |
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Atomic radii |
the distance from the atomic nucleus to the outermost stable electron orbital in a atom at equilibrium |
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Conductivity |
the degree to which a specified material conducts electricity |
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Density |
number of atoms per unit volume |
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Diatomic molecule |
Molecule with two atoms |
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Ductility |
Ability to be stretched into wire |
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Electronegativity |
measure of the tendency of an atom to attract a bonding pair of electrons |
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Family |
a column of elements in the periodic table |
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First Ionization Energy |
energy required to remove the most loosely held electron from one mole of gaseous atoms to produce 1 mole of gaseous ions each with a charge of 1+ |
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Halogens |
Group 17, reactive nonmetallic elements that form strongly acidic compounds with hydrogen, from which simple salts can be made |
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Luster |
Shininess |
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Malleability |
Whether or not the element can be flattened into sheets |
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Metal |
a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity |
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Metalloid |
an element whose properties are intermediate between those of metals and solid nonmetals. They are electrical semiconductors. |
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Noble gases |
Very stable, group 18 |
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Nonmetal |
Elements lacking the characteristics of metals |
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Period |
Rows along the periodic table |
