| WORDS TO KNOW |
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| DEFININTIONS |
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| 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 |
HHS Shrek
