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CHEMISTRY
asp 1-C THE PERIODIC TABLE
WORDS TO KNOW | Definition |
---|---|
Actinides | Elements 89-102 on the periodic table |
Alkali metals | Elements in the first column of the periodic table |
Alkaline earth metals | Elements in the second column of the periodic table |
Ductile | The property of metal that allows it to be drawn into wires |
Families | Vertical columns on the periodic table |
Graphite | A form of pure carbon |
Groups | Vertical columns on the periodic table |
Halogens | Elements in column 17 of the periodic table |
Diatomic molecule | A molecule with two atoms that are both the same element; examples include Hydrogen, Nitrogen, Oxygen, and all of the Halogens |
Inner transition elements | Lanthanides and Actinides |
Lanthanides | Elements 57-70 on the periodic table |
Luster | The shininess of a metal |
Malleable | Able to be hammered into thin sheets |
Metalloids | Elements between the metals and nonmetals on the periodic table; they possess characteristics of both metals and nonmetals; also known as semimetals |
Metals | Located on the left side of the periodic table; known for having fairly loosely valence electrons |
Noble gases | Elements in column 18 of the periodic table; they generally do not form bonds; also referred to as inert gases |
Nonmetals | Elements toward the right of the periodic table; they possess tightly held valence electrons |
Periodic Table | A chart that organizes the elements according to their atomic number and groups them according to their properties; currently there are 118 identified |
Periods | Horizontal rows on the periodic table |
Transition metals | Elements in columns 3-12 on the periodic table |