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Unit 2 Lesson 2 Vocabulary

Across
An arrangement of the elements in order of their atomic numbers such that elements with similar properties fall in the same column or group
The weighted average of the masses of all naturally occuring isotopes of an element.
An element on the left side of the periodic table that is shiny and that conducts heat and electricity well.
An element on the right side of the periodic table that conducts heat and electricity poorly.
Down
In chemistry, a horizontal row of elements in the periodic table
A one-, two-, or three-letter abbreviation of the name of an element.
An element that has properties of both metals and nonmetals.
A vertical column of elements in the periodic table; elements in a group share chemical properties.