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Andrew Masich

Chapter 5 vocab

TermDefinition
periodic table an arrangement of elements in columns
period each row in the table of elements
group each column in the table
periodic law a pattern of repeating properties
atomic mass unit one twelfth the mass of a carbon 12 atom
metals elements thaat are good conductors of heat and electricity
nonmetals elements that are poor conductors of heat and electricity
transition metals elements on the left and right side of the periodic table
metalloids elements that have properties that fall between metals and nonmetals
valence electron an electron with the highest occupied energy level of an atom
alkali metals metals with one valence electron and highly reactive
alkaline earth metals elements in group 2a
halogens elements in group 7a with 7 valence electrons
noble gasses elements in group 8a all except helium, they have 8 valenc electrons
Created by: andrew.masich
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