Not an oil, water based

  • oxygen dominates carbon
    • it takes a third carbon to become an oil / fatty acid
  • 2 oxygen atoms 'outweigh' 2 carbon atoms
    • oxygen weights 16 each
      • 2*16=32
    • carbon weights 12 each
      • 2*12=24
        • oxygen (water) wins

acetic acid 2


The smallest oil, fatty acid

  • carbon dominates oxygen
    • 3 carbon atoms 'outweigh' 2 oxygen atoms
      • 2 oxygen 2*16=32
      • 3 carbon 3*12=36
        • carbon (oil) wins

propanoic acid 2

Fatty acids get longer,

  • add carbon to the chain
    • saturated,
      • maximum hydrogen atoms
      • full or saturated
    • un-saturated,
      • 2 bonds, double, between carbons
      • less hydrogen atoms
      • not-full or un-saturated