Chemistry 10-23-12 Chemical Formula Practice & Worksheet

CHEMISTRY – Yeah, don’t you wish it was as easy as this? The rules for writing chemical formulas, I mean. But no, there are about 50 million, and you have to keep them all straight! Do you need some extra help? Help session Friday morning, 7:15ish A.M.

Click here for the Chemical Formulas Worksheet.

First step – memorize what you are supposed to memorize – polyatomic ions, rules, etc. Next, organize your notes into what you do for ionic compounds, those with metals and polyatomic ions, and what you do for molecules, those with only nonmetals and metalloids. Then analyze every single compound you have to name or write a formula for – is it ionic? then you only use the Stock system. Is it a molecule – then you can use the Stock system or prefixes. Do you see what I mean?

flickr photo by Gord McKenna


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