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Atomic Theory Part 2

TermDefinition
Valence Electrons The electrons farthest from the nucleus; they are responsible for atoms forming compounds
Molecule 2 or more atoms chemically combined
Compound 2 different atoms chemically combined
Mixture A combination of 2 or more different atoms or molecules that are not chemically combined
Covalent Bond Chemical bond between 2 nonmetals
Ionic Bond Chemical bond between a metal and a nonmetal
Octet Rule Elements are stable when their valence shell is full. This can be done with 8 or in some cases 2 electrons.
Alkali Metals Found on the far left of the periodic table. React and lose luster quickly. 1 Valence electron.
Alkali Earth Metals Found on the left of the periodic table. Soft metals that react to water. 2 Valence electrons.
Transition Metals Found on the middle of the periodic table. Less reactive than the other families of metals. 3-12 Valence electrons.
Halogens Found on the right of the periodic table before Inert Gases. Poor conductors and very reactive. 7 Valence electrons.
Inert Gases Found on the far right of the periodic table. Do not form compounds; Not reactive. 8 Valence electrons
Created by: az63026
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