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reconize that there are more than 100 elements and some have similar properties

periodic table a table that shows elements in a way that describes something that occurs or repeats at irregular intervals
period in chemistry, a horizontal row of elements in the periodic table
group a vertical column of elements in the periodic table; elements in a group that share chemical properties
valence electrons electron that is found in the outermost shell of an atom and that determines the atom's chemical properties.
reactivity the state or power of being reactive
metalloid elements that have properties of metals and nonmetals
inert lacking ability or strength to move
Created by: 37skygur