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Atomic Theory Pt.2
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Term | Definition |
---|---|
Valence Electrons | The electrons farthest from the nucleus; they are responsible for atoms forming compounds. |
Molecule | 2 or more atoms chemically combined. |
Compounds | 2 different atoms chemically combined |
Mixture | A combination of two or more different atoms or molecules that are not chemically combined. |
Covalent bond | Chemical bond between two or more non-metals. |
Ionic bond | Chemical bond between a metal and a non-metal. |
Octet rule | Elements are stable when their valence shell is full this can be done with 8 or in some cases 2. |
Alkali metals | 2 valence electrons and the way that they behave is that they are very reactive to water. |
Alkali earth metals | They can be cut with a knife, 2 electrons |
Transition metals | 3 valence electrons , they're shiny and they react to heat. |
Halogens | 7 valence electrons, they are poor conductors and have low boiling points. |
Inert gases | 8 valence electrons, they are odorless, colorless, and transparent. |