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S8P1.f
recognize that there are more then 100 elements and some have similar properties
Term | Definition |
---|---|
periodic table | a chart that organizes information about all of the known elements according to their properties |
period | in chemistry a horizontal row of elements in a periodic table |
group | a vertical column of elements in the periodic table;elements in a group share chemical properties |
valence electron | an electron that is found in the outermost shell of an atom and that determines the atom's chemical properties |
reactivity | describes how likely an element is to form bonds with other element |
metalloids | an element that have properties of both metals and nonmetals |
invert | unable to react chemically under normal circumstances |