Hydrophobic

Hydrophobic molecules repel water

Nonpolar Molecules have hydrophobic bonds

Nonpolar molecules do not contain ions and don’t have dipole movement to form charges.

Dipole movement means separation of charges like an atom becoming either positively or negatively charged during a bonding process.
  • Nonpolar molecules don’t become hydrated.
  • The molecules are insoluble or almost insoluble in water.
  • Example: ¬†carbon-hydrogen or carbon-carbon hydrophobic bonds.
  • More example: tristearin, or tristearoyl glycerol, a component of natural fats

Basically, nonpolar molecules are scared of water!

The force that causes hydrophobic molecules or nonpolar portions of molecules to aggregate together rather than to dissolve in water is called the hydrophobic bond. This is not a separate bonding force; rather, it is the result of the energy required to insert a nonpolar molecule into water. National Library of Medicine (NLM) – section on hydrophobic Bonds Cause Nonpolar Molecules to Adhere to One Another

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