GCSE Revision Notes, Resources      

GCSE Chemistry > Alkenes

The general formula for alkenes is as follows:
    CnH2n   (where "n" is a constant)
Alkenes are unsaturated hydrocarbons because they contain a double bond between two of their carbon atoms. The simplest alkene is ethene (C2H4) because "methene" (CH2) cannot exist.

The first four members of the homologous series of the alkenes are:

    C2H4     (Ethene - Gas at room temperature/pressure)
    C3H6     (Propene - Gas at room temperature/pressure)
    C4H8     (Butene - Gas at room temperature/pressure)
    C5H10     (Pentene - Liquid at room temperature/pressure)
    (Ethene)                 (Propene)

See also:
Alkanes / Alcohol

Site Search:

Copyright © 2004-2013 revisioncentre.co.uk In association with: Computer Science Revision | Revision Links and Tutors | EFL Teaching / Learning
Navigation: Home | Contact | KS2 Maths | Advice | Parents | Games | Shop | Links |
GCSE Subjects: Biology | Chemistry | Computing | English | French | Geography | German | History | Maths | Physics | RE | Spanish
Web Hosting by Acuras