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Level 1 Chemistry

'''Naming Molecular Compounds'''

A. Chemical Name to Chemical Formula

1. First write down the symbol of the non-metal and then the non-metal.

2. Using the table of prefix below, the subscript is the number from the prefix. For no prefix, it is a subscript of "1"

EXAMPLE:Disulfur heptachloride

Step 1 '''S'''   '''Cl'''

Step 2 '''S2Cl6'''

MORE EXAMPLES: Carbon disulfide, Decaoxygen pentanitride (answers on practice sheet)

PREFIX TABLE

mono- 1   di- 2    tri- 3    tetra- 4    penta- 5    hexa- 6    hepta- 7    octa- 8    nona-9    deca-10

'''B. Chemical Formula to Chemical Name'''

1. Write down the first non- metal name.

2. Add prefix from table (1st letter needs to be capital)End of 1st word.

3. Write down the second non-metal name. Add prefix from the table (no caps in 1st letter). IMPORTANT: If first element has subscript of "1", you '''Do Not add MONO'''.

4. Replace ending with "ide"

EXAMPLE: F2O1

Step 1 Difluorine
Step 2 monoxygen
Step 3 Diflurine monoxide

MORE EXAMPLES:

CO ''Carbon monoxide''

Trinitrogen octaphosphide ''N3P8''

Decaoxygen pentanitride ''O10N5''

CO- ''Carbon monoxide''

N3P8- ''Trinitrogen octaphosphide''

'''PracticeSheet'''

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