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chapter 5 icp test

QuestionAnswer
Mendeleev gave the name eka-aluminum to a (an)... unknown element he predicted would have properties similar to those of aluminum.
the standard on which the atomic mass unit is based is the mass of a... carbon-12 atom
one twelfth the mass of a carbon-12 atom is used to define a (an)... atomic mass unit
the unit for mass is... tin, copper, and cesium
which statement is true about the metalloid silicon? silicon is a better conductor of electric current than sulfur is
group 7A of the periodic table contains the... most reactive non metals
two highly reactive elements in period 2 are the metal lithium and the... nonmetal fluorine
atoms of the most reactive elements tend to have... one or seven valence electrons
compared with group 2A elements, group 6a have... more valance electrons
a member of the boron family has three valence electrons, while a member of the nitrogen family has... 5
what is not true about the elements fluorine, chlorine and iodine? they are all similar to noble gases
which of the following gases emit colors when an electric current is applied? argon and krypton
which element is in nature only in compounds? sodium
which element is found in most of the compounds in your body except for water? carbon
Created by: marissa24
 

 



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