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Quick TrainerFunctional Groups and Their Structures
Learn to identify common organic functional groups by their characteristic structures and formulas.
Science26 items3 levelsDifficulty 3/5
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Levels
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1
Common Groups
7 items
2
Carbonyl & Acid Derivatives
8 items
3
Advanced & Nitrogen/Sulfur Groups
11 items
All 26 cards
What functional group has the structure -OH attached to a carbon?
hydroxyl
What functional group is characterized by a carbon-carbon double bond (C=C)?
alkene
What functional group is characterized by a carbon-carbon triple bond (C≡C)?
alkyne
What is the functional group with only carbon-carbon single bonds and hydrogens?
alkane
What functional group has an oxygen connecting two carbon atoms (C-O-C)?
ether
What functional group has a halogen atom (F, Cl, Br, I) bonded to carbon?
haloalkane
What aromatic ring functional group has the formula C6H5- ?
phenyl
What functional group has a carbon double-bonded to oxygen at the end of a chain (CHO)?
aldehyde
What functional group has a carbonyl (C=O) bonded to two carbon atoms?
ketone
What functional group has the structure -COOH?
carboxylic acid
What functional group has the structure -COO- linking two carbons (RCOOR')?
ester
What functional group has a carbonyl bonded to nitrogen (CONH2)?
amide
What functional group has the general C=O bond shared by aldehydes and ketones?
carbonyl
What functional group has a carbonyl bonded to a halogen (RCOX)?
acyl halide
What functional group has two acyl groups bonded to a single oxygen (RCO-O-COR)?
acid anhydride
What functional group has a nitrogen with one or more carbons (and possibly H)?
amine
What functional group has the structure -NO2 bonded to carbon?
nitro
What functional group has a carbon triple-bonded to nitrogen (C≡N)?
nitrile
What functional group has the structure -SH bonded to carbon?
thiol
What functional group has a sulfur connecting two carbons (C-S-C)?
thioether
What functional group has the structure -SO3H bonded to carbon?
sulfonic acid
What functional group has carbon double-bonded to nitrogen (C=N)?
imine
What functional group has the structure -N=N- linking two groups?
azo
What functional group has the structure R-O-PO3 (phosphate ester)?
phosphate
What functional group has a carbon bearing both a hydroxyl and an amine on adjacent positions in amino acids' side—what group is -NH2 plus -COOH together found in?
amino acid
What functional group has the structure -OOH (oxygen-oxygen single bond with H)?
peroxide
Keep going
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Every element's symbol and name — all 118, from hydrogen to oganesson.
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Common Acids and Bases
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