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Ch.5 Vocab

Chapter 5 Vocabulary

TermDefinition
Periodic Table An Arrangement of elements in columns, based on a set of properties that repeat from row to row
Period The rows in the Periodic table of elements
Group The Columns on the periodic table of elements
Periodic Law The pattern of repeating properties
Atomic Mass Unit One twelfth the mass of a carbon-12 atom
Metals Elements that are good conductors of electric and heat
Transition Metals Elements that form a bridge between the elements on the left and right sides of the periodic table
Nonmetals elements that are poor conductors of heat and electricity
Metalloids Elements with properties that fall between that of metals and nonmetals
Valence Electron An electron that is in the highest occupied energy level of an atom
Alkali Metals The first group of elements on the periodic table and have 1 valence electron
Alkaline Earth Metals The second group of elements on the periodic table and have 2 valence electrons
Halogens Group 7 on the periodic table and have 7 valence electrons
Noble Gases Group 8 on the periodic table and have 8 valence electrons
Created by: paul.hornacek
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