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Atomic theory part 2
Question | Answer |
---|---|
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. |
Covelent bond | chemical bond between 2 nonmetals . |
Ionic bond | chemical bond between a metal and a nonmetal. |
Octet rule | Elements are stable when there valence shell is full. This can be done with 8 or in some cases 2. |