11.1 Basic concepts of organic chemistry Flashcards

1
Q

Alicyclic

A

an aliphatic compound that is arranged in non-aromatic rings (with or without side
chains).

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2
Q

Aliphatic

A

a compound containing carbon and hydrogen atoms joined in straight or branched
chains or in non-aromatic rings.

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3
Q

Aromatic

A

some or all of the carbon atoms are found in a benzene ring

Ring containing 3 double bonds

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4
Q

Alkane

A

: a homologous series with the general formula CnH2n+2

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5
Q

Alkyl

A

a group with the general formula CnH2n+1
e.g. methyl- CH3/ ethyl CH2-CH3

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6
Q

Dipole

A

a partial charge on an atom which is caused by the differing electronegativities of
atoms in a covalent bond.

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7
Q

Displayed Formula

A

the relative positions of atoms and the bonds between them

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8
Q

Empirical Formula

A

the simplest whole number ratio of atoms of each element present in a compound

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9
Q

Functional Group

A

a group of atoms responsible for the characteristic reactions of a compound

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10
Q

Homologous Series

A

a series of organic compounds containing the same functional group
with successive members differing by -CH2

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11
Q

Heterolytic Fission

A

when a covalent bond breaks, one bonding atom receives both
electrons from the bonded pair.

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12
Q

Homolytic Fission

A

when a covalent bond breaks, each bonding atom receives one electron
from the bonding pair, forming 2 radicals.

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13
Q

Radical

A

a species with an unpaired electron. E.g. Cl*

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14
Q

Reaction Mechanism

A

a series of steps that represent the overall reaction by showing the
breaking and forming of bonds using curly arrows.

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15
Q

Saturated

A

an organic compound which only contains C-C single bonds.

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16
Q

Skeletal Formula

A

the simplified organic formula, shown by removing hydrogen atoms from
alkyl chains, leaving the carbon skeleton and the functional groups

17
Q

Molecular Formula

A

the number and type of atoms of each element in a molecule

18
Q

Structural Isomers

A

compounds with the same molecular formula but different structural
formulae

19
Q

Unsaturated

A

an organic compound which contains at least one C=C double bond, a C≡C
triple bond or an aromatic ring.

20
Q

General formula for alkenes, alcohols and alkanes

A

CnH2n+2 alkane
CnH2n alkane
CnH2n+1OH alcohol

21
Q

Molecular formula

A

Actual number of atoms in a molecule or element
E.g. C2H6 ethane

22
Q

Structural formula

A

Arrangement of atoms in a molecule without showing all the bonds

E.g. butan-1-ol

CH3CH2CH2CH2OH

23
Q

Homologous series endings

A

Alkanes: -ane
Alkyl groups: alkyl-
Alkenes: -ene
Alcohols: -ol
Aldehydes: -anal
Ketones: -one
Carboxylic acids: -oic acid
Halogenalkanes: fluoro- / bromo- / iodi- / chloro-
Cycloalkanes: cyclo- / -ane
Esters: alkyl- / -anoate

24
Q

Nomenclature: how to name an organic compound

A
  1. Find length of longest continuous chain of carbons and select stem
  2. Main Functional group should give the suffix
  3. Find number on carbon chainthat the functional groups sits on (making it the lowest)
  4. Note any other branched groups like alkyl groups or halogens and name them
  5. Any side chains must be written as prefixes in alphabetical order
  6. More than 1 identical functional group or side chain= di-/ tri-/ tetra-
25
Q

Types of reactions

A

Addition: two reactions join together to form one product
Substitution: the number of reactants is equal to the number of products, where one substance is swapped
Elimination: removal of a small molecule from a larger one (one reactant two products)