chemistry 2
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prefixes
tell you how many carbons are in a chain
meth-
• 1 carbon • methane
eth-
2 carbons ethane
prop-
3 carbons
but-
4 carbons
pent-
5 carbons
hex-
6 carbons
hept-
7 carbons
oct-
8 carbons
non-
9 carbons
dec-
10 carbons
alcohol
hydrocarbon + OH
how to name alcohols
• take the alkane name • drop the - e • add -ol ex: methane - methanol if you see -OH its an alcohol
ethers (-O- in the middle)
• oxygen linking two carbon chains • structure: carbon - O - carbon • if oxygen is between two carbons its an ether
how to name ethers
• name the smaller chain fist • add oxy • then name the longer chain ex: CH3 - O - CH2CH3 - methoxyethane
aldehyde
carbonyl (C double bond O) at the END of the chain
how to name aldehydes
• drop the - e • add - al • ex: methane - methanal
ketones
• C double bond O in the middle
how to name ketones
• drop -e • add - one • propane - propanone
carboxylic acids
C double bond O + OH together (-COOH)
how to name carboxylic acids
• drop the - e • add -oic acid • ex: methane - methanoic acid • common examples: fatty acids, amino acids
benzene (aromatic hydrocarbon)
• C6H6 • ring shape • alternating double bonds • electrons are shared around the ring • very stable
benzene derivatives you should recognize
• phenol • toluene • aniine • benzene = aromatic ring
amines (contain nitrogen)
• nitrogen with a lone pair • can use amino- prefix • or - amine suffix • CH3NH2 - methylamine • if you see N bonded to carbons - Amine