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Basic Chemistry (Chapters 1-16)

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CHEMISTRY 2001 NAME PROBLEM SET #4: CHEMICAL NOMENCLATURE (Section 5.14) DATE PERIOD I. BACKGROUND: Read up to section 5.14. The following dichotomous key may be helpful in naming chemical compounds: 1) Does the formula begin with an H? Yes —It is an acid— Go to 5. No —It is not an acid— Go to 2. 2) Does the formula begin with a metal that has more than one valence number (e.g., Fe, Cu, Pb, Sn, etc.)? Yes —Name the first element followed by its valence number (Use a Roman numeral) OR use the “old- style” name for the first element with an “-ic” or “- ous” ending— Go to 3. No Go to 4. 3) Does the formula contain a polyatomic ion? Yes —Name the first element, then the polyatomic ion. If two elements are present, name both, then the polyatomic ion (for example, NaHCO 3 is sodium hydrogen carbonate). No Go to 4. 4) Are both elements non-metals? Yes —Name the first element using the proper prefix…di-, tri-, tetra-, penta-, hexa-, etc. (never mono-). Name the second element with the proper prefix (including mono-) and –IDE ending.
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