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IGCSE - Organic Chemistry
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IGCSE - Organic Chemistry
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IGCSE - Organic ChemistryWhat is organic chemistry about? - ANSWER-molecules that contain carbon
general formula definition and example (formula for ethene) - ANSWER-- an algebraic formula that can
describe any member of a family of compounds
- CnH2n (for all alkenes)
empirical formula definition and example (formula for ethene) - ANSWER-- the simplest whole number ratio of
atoms of each element in a compound
- Ch2
molecular formula definition and example (formula for ethene) - ANSWER-- the actual number of atoms of
each element in a molecule
- C2H4
displayed formula definition and example (formula for ethene) - ANSWER-- shows how all the atoms are
arranged and the bonds between them
structural formula definition and example (formula for ethene) - ANSWER-- shows how the arrangement of
atoms carbon by carbon with the attached hydrogens and functional groups
- CH2CH2
, homologous series definition - ANSWER-a group of compounds that can all be represented by the same general
formula and increase by CH2 between each member of the series.
What do compounds in a homologous series share? - ANSWER-similar chemical properties
using a general formula to work out the molecular formula of any member of a homologous series - study -
ANSWER-
What do all molecules in a homologous series contain? - ANSWER-the same functional group
functional group definition - ANSWER-group of atoms that determine how a compound typically reacts
alkenes functional group - ANSWER-C=C
1 carbon atom in the carbon chain stem - ANSWER-meth-
2 carbon atoms in the carbon chain stem - ANSWER-eth-
3 carbon atoms in the carbon chain stem - ANSWER-prop-
4 carbon atoms in the carbon chain stem - ANSWER-but-
5 carbon atoms in the carbon chain stem - ANSWER-pent-
6 carbon atoms in the carbon chain stem - ANSWER-hex-
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