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Chapter 23 Functional Groups
Key Concepts and Vocabulary
37
Chemistry
11th Grade
05/02/2012

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Term
How are organic compounds classified?
Definition
Organic compounds can be classified according to their functional groups.
Term
What is a halocarbon?
Definition
A halocarbon is a carbon containing compound with a halogen substituent.
Term
How may halocarbons be prepared?
Definition
A halogen can replace a hydrogen atom on an alkane to produce a halocarbon.
Term
Functional group
Definition
a specific arrangement of atoms in an organic compound that is capable of characteristic chemical reactions
Term
Halocarbons
Definition
a class of organic compounds containing covalently bonded fluorine, chlorine, bromine, or iodine.
Term
Alkyl halides
Definition
halocarbons in which a halogen is attached to a carbon of an aliphatic chain
Term
Aryl halides
Definition
halocarbons in which a halogen is attached to a carbon of an arene ring
Term
Substitution reaction
Definition
an atom, or a group of atoms, replaces another atom or group of atoms.
Term
How are alcohols classified?
Definition
aliphatic alcohols can be classified into structural categories according to the number of R groups attached to the carbon with the hydroxyl group.
Term
How are alcohols named?
Definition
When using the IUPAC system to name continuous-chain and substituted alcohols, drop the -e ending of the parent alkane name and add the ending -ol.
Term
How does the solubility of an alcohol vary with the length of its carbon chain?
Definition
alcohols of up to four carbons are soluble in water in all proportions.  The solubility of alcohols with four or more carbons in the chain is usually much lower.
Term
What reactions of alkenes may be used to introduce functional groups into organic molecules?
Definition
addition reactions of alkenes are an important method of introducing new functional groups into organic molecules.
Term
What is the general structure of an ether and how are their alkyl groups named?
Definition
the general structure of an ether is R-O-R. The alkyl groups attached to the ether linkage are named in alphabetical order and are followed by the word ether. 
Term
Alcohol
Definition
an organic compound with an -OH group.
Term
Hydroxyl group
Definition
the -OH functional group in alcohols
Term
Fermentation
Definition
the production of ethanol from sugars by the action of yeast or bacteria.
Term
Denatured alcohol
Definition
ethanol with an added substance to make it toxic (poisonous).
Term
Addition reaction
Definition
a substance is added at the double or triple bond of an alkene or alkyne.
Term
Hydration reaction
Definition
the addition reaction of water to an alkene
Term
Hydrogenation reaction
Definition
the addition of hydrogen to a carbon-carbon double bond to produce an alkane
Term
Ether
Definition
a compound in which oxygen is bonded to two carbon groups.
Term
What is the structure of a carbonyl group found in aldehydes and ketones?
Definition
The C=0 functional group is present in aldehydes and ketones.
Term
What is the general formula for a carboxylic acid?
Definition
the general formula for a carboxylic acid is RCOOH.
Term
What is the general structure of an ester?
Definition
Esters contain a carbonyl group and an ether link to the carbonyl carbon.  The general formula for an ester is RCOOR.
Term
Why is dehydrogenation an oxidation reaction?
Definition
dehydrogenation is an oxidation reaction because the loss of each molecule of hydrogen involves the loss of two electrons from the organic molecule.
Term
Carbonyl group
Definition
a functional group with the general structure C=O
Term
Aldehyde
Definition
an organic compound in which the carbon of the carbonyl group is always joined to at least one hydrogen.  The general formula is RCHO.
Term
Ketone
Definition
an organic compound in which the carbon of the carbonyl group is joined to two other carbons.  The general formula is RCOR.
Term
Carboxylic acid
Definition
a compound with a carboxyl group.
Term
Carboxyl group
Definition
it consists of a carbonyl group attached to a hydroxyl group.
Term
Fatty acids
Definition
the name given to continuous-chain carboxylic acids that were first isolated from fats.
Term
Esters
Definition
derivatives of carboxylic acids in which the -OH of the carboxyl group has been replaced by an -OR from an alcohol.
Term
Dehydrogenation reaction
Definition
the loss of hydrogen.  Strong heating and a catalyst are usually necessary.
Term
How does an addition polymer form?
Definition
An addition polymer forms when unsaturated monomers react to form a polymer.
Term
How are condensation polymers formed?
Definition
Condensation polymers are formed by the head-to-tail joining of monomer units.
Term
Polymer
Definition
a large molecule formed by the covalent bonding of repeating smaller molecules.
Term
Monomers
Definition
the smaller molecules that combine to form a polymer.
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