Chemistry - Organic Chemistry (Organic compounds can belong to a certain…
Chemistry - Organic Chemistry
The actual number of atoms of each element in a molecule.
Shows how all the atoms are arranged, and all the bonds between them.
The simplest whole number ratio of atoms of each element in a compound (cancel the numbers down if possible).
Shows the arrangement of atoms carbon by carbon, with the attached hydrogens and functional groups.
Is an Algebraic formula that can describe any member of a family of compounds.
Formulas for Ethene (For all Alkenes)
Organic compounds can belong to a certain Homologous series
You can use a general formula to work out the molecular formula of any member of a homologous series.
Alkanes are a homologous series that only contain carbon and hydrogen atoms
A homologous series is a group of compounds that can all be represented by the same general formula.
A functional group is a group of atoms that determine how a compound typically reacts.
The general formula for alkanes is Cn H2n+2.
Molecules in a homologous series contain the same functional group.
These are the functional groups you need to know: Alkenes, Alcohols, Carboxylic Acids and Esters
Alkenes Functional group -
Alcohols Function group -
Carboxylic Acids Functional group -
Esters Functional group -
This means that compounds in a homologous series often react in similar ways - they share similar chemical properties.
No. of Carbons
But-2-ene - CH3 CH CH CH3
ethanol - CH3 CH2 OH
Propane - CH3 CH2 CH3
ethanoic acid - CH3 COOH
Prefix: alkyl, Suffix: anoate
Ethyl ethanoate - CH3 C(=O)OCH2 CH3
Prefix or Suffix
A hydrocarbon is a compound of hydrogen and carbon only.