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15 Cards in this Set
- Front
- Back
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main group elements
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predictable properties, A columns, tall columns on sides of chart
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transitional elements or transitional metals
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properties less predictable than main group, B columns
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each column of periodic table makes up a/an
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family or group with similar properties
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what is group 8a
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noble gases, chemically inert, helium
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what is group 1a
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alkali metals, highly reactive
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what is group 2a
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alkaline earth metals, fairly reactive, calcium
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what is group 7a
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halogens, highly reactive non=metals, chlorine
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ion charge formula
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number of protons - number of electrons
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negatively charged ions
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anions (onions make you cry)
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positively charged ions
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cations (cheshire cat)
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metals
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lose electrons (shiny and fall off), most elements, good conductors, malleable, ductile, shiny, iron
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nonmetals
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gain electrons from metals, upper right corner of p. table, separated by diagonal zigzag, can be solid or gas, poor conductors, oxygen
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metalloids
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semi-conductors, semi-metals, zigzag line, intermediately and controllably conductive, silicon
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valence electrons
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shown by number 1 - 8 on main group column headers except helium
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predicting charge aquired when elements ionize
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main group elements form ions with the same number of valence electrons as the nearest noble gas
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