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Subject - General Chemistry

Literally, hydrophobic means to avoid water. Therefore, hydrophobic molecules or molecular groups do not exhibit pronounced interactions with polar groups (hydrophobicity), but prefer to be close to other hydrophobic groups. Water-avoiding whole molecules or surfaces are also called hydrophobic.

For example, the aggregation of hydrophobic molecules can be observed in micelles or in the oriented adsorption on interfaces. Long-chain or aromatic hydrocarbons are typical hydrophobic groups.

The opposite of hydrophobicity is hydrophilicity.