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chapter 3
Formulas to Names
-Memorized Names:
water - H2O
ammonia - NH3
methane - CH4
ethane - C2H6
propane - C3H8
-Systematic Names :
*You can recognize binary covalent compounds from their formulas, which contain symbols for only two, nonmetallic elements.
*The general :formulas is AaBb, “A” and “B” = nonmetals, and “a” and “b” = subscripts
*need to know all the prefixes and roots of the Nonmetals
-Ions:
*The positive cations and the negative anions then attract each other to form ionic bonds.
*The atoms of the noble gases found in nature are uncombined with other atoms.
chapter 4