alkane

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alkane

A student draws the molecular structure of an alkane on a whiteboard.

Definition
  1. Noun:
    • A type of hydrocarbon: An alkane is a chemical compound belonging to a series of simple, saturated hydrocarbons. Its molecules contain only single bonds between carbon atoms and are saturated with hydrogen atoms. The general chemical formula for this series is CₙH₂ₙ₊₂.
Examples of Usage
  • Noun:
    • Methane, the simplest alkane, is the primary component of natural gas.
    • Butane, an alkane with four carbon atoms, is commonly used as a fuel in lighters.
    • The chemical stability of an alkane is due to its single covalent bonds.
Advanced Usage
  • "Normal alkane" or "n-alkane": Refers to an alkane with an unbranched chain of carbon atoms.
    • Pentane is a normal alkane, while isopentane is a branched isomer.
  • "Cycloalkane": While not an alkane itself, this term is used for related saturated hydrocarbons that form a ring structure, contrasting them with the straight or branched-chain alkanes.
    • Cyclohexane is a cycloalkane, not a standard alkane, because its carbon atoms are arranged in a ring.
Variants and Related Words
  • Paraffin (n): A common synonym for alkane, especially in older technical contexts or when referring to certain mixtures.
    • Paraffin wax is composed mainly of longer-chain alkanes.
  • Saturated hydrocarbon (n): The broader chemical category to which alkanes belong.
    • Alkanes are the simplest examples of saturated hydrocarbons.
  • Alkyl (adj/n): A functional group derived from an alkane by removing one hydrogen atom.
    • An alkyl group is often represented by the symbol 'R' in chemical formulas.
Synonyms
  • Paraffin: (As above, a direct synonym in chemical nomenclature).
  • Saturated hydrocarbon: (Describes the key chemical characteristic).
Related Phrases / Terms
  • Alkane series: Refers to the entire homologous series of these compounds (methane, ethane, propane, etc.).
    • The first ten members of the alkane series are well-known.
  • Branched-chain alkane: An alkane where the carbon chain is not straight but has one or more branches.
    • Isobutane is a branched-chain alkane with the same formula as butane.
alkane

A student draws the molecular structure of an alkane on a whiteboard.

Noun
  1. a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2)

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