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Chapter 5 Vocab

Physical Science

Periodic Table Arrangement of elements in columns, based on a set of properties that repeat from row to row.
Period Each row in the periodic table.
Group Each column on the periodic table.
Periodic Law Properties of elements that repeat themselves in predictable ways.
Atomic Mass Unit (AMU) One twelfth the mass of a carbon-12 atom.
Metals Elements that are good conductors of of electric current and heat.
Transition Metals Elements that form a bridge between the elements on the left side of the table to the right.
Nonmetals Elements that are poor conductors of heat and electric current.
Metalloids Elements with properties that fall between those of metals and nonmetals.
Valence Electron An electron that is in the highest occupied energy level of an atom.
Alkali Metals Elements in group 1A .
Alkali Earth Metals Elements in group 2A.
Halogens Elements in group 7A.
Noble Gases Elements in group 8A.
Created by: hayden.murphy