ApchemWiki | RecentChanges | Preferences
Difference (from prior major revision)
(no other diffs)
Changed: 16c16
**Prefix to denote number of atoms of the second element (if number is 1, use "mono")
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**Prefix to denote number of atoms of the second element (if number is 1, use "mono"), see table below
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Added: 19a20,24
<table bgcolor=beige border=5 bordercolor=black> |
Prefix Table |
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Added: 20a26,47
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mono - 1 |
tetra - 4 |
hepta - 7 |
deca - 10 | |
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di - 2 |
penta - 5 |
octa -8 |
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tri - 3 |
hexa - 6 |
nona - 9 |
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</table>
Added: 36a64
Chemical Formula to Chemical Name
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Changed: 50c78,87
Backward: Chemical Name to Chemical Formula (same for all acids)
**Find prefix & suffix and determine name of anion **Find anion symbol(s) charge from anion name **Balance the negative charge of anion with "H=" **Write chemical formula, anion will always have subscript 1, it is just what subscript of H is.
Additional Information needed
* AnionTable (larger number of ions to memorize than 1st year) *
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4 Rules for Naming Compounds (by Taylor C, 2004)
1.Binary Compounds:Made up of only 2 elements
- A. Metal & Non-metal
- Name metal
- Name non-metal
- Drop end of non-metal name and add suffix -ide
- Backwards
- Write down symbol of metal & charge
- Write down symbol of non-metal & charge
- Total "+" charge equals "-" charge
- B. 2 Non-metals
- Prefix to denote number of atoms of the first element (if number is greater than 1)
- Name first element
- Prefix to denote number of atoms of the second element (if number is 1, use "mono"), see table below
- Add suffix "ide"
- Backwards:
- Write down symbol for each element & add appropriate number of prefixes
Prefix Table |
mono - 1 |
tetra - 4 |
hepta - 7 |
deca - 10 |
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di - 2 |
penta - 5 |
octa -8 |
tri - 3 |
hexa - 6 |
nona - 9 |
2. Metal & Polyatomic Ions
- Name metal
- Name polyatomic (no Prefixes)
- Backwards:
- Give down appropriate symbols and charge
- Balance charges
- Use paranthesis if subscript is greater than 1, and with polyatomics
3. Compounds containing metals w/ more than one possible charge
- Name metal w/ appropriate Roman Numeral (from apporopriate charge)
- Name non-metal or ployatomic
- Backwards:
- Write down symbol and charge for metal & anion (metal charge from Roman numeral)
- Balance charges to determine subscripts
4. Acids (all acids begin w/ "H"): Name acids by anion
Chemical Formula to Chemical Name
- A. Anion ends in "ide"
- Use prefix "hydro-"
- Name anion
- Change suffix "ide" to "ic"
- Add word "acid"
- B. Anion ends in "ite"
- Name anion
- Change suffix from "ite" to "ous"
- Add word "acid"
- C. Anion ends in "ate"
- Name anion
- Change suffix from "ate" to "ic"
- Add word "acid"
Backward: Chemical Name to Chemical Formula (same for all acids)
- Find prefix & suffix and determine name of anion
- Find anion symbol(s) charge from anion name
- Balance the negative charge of anion with "H="
- Write chemical formula, anion will always have subscript 1, it is just what subscript of H is.
Additional Information needed
AnionTable (larger number of ions to memorize than 1st year)