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Science L7

QuestionAnswer
element substance made of only one type of atom
atomic number top left corner of element box
atomic mass top right corner of element box
valence electrons in outermost shell, highest energy
chemical symbol 1 or 2 letter abreviation for element
group vertical columns
period horizonal rows
metals good conductors
metalloids semiconductors
nonmetals poor conductors
Group 1 most reactive metals
Group 17 most reactive nonmetals
Group 18 non reactive, Noble Gases
periodicity follow a pattern
Mendeleev scientist who organized elements based on properties
Created by: jmeager
Popular Chemistry sets

 

 



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