Hydrophobic and hydrophilic groups tend to assemble with the same kind of molecules. (en)
Diagram of the induced fit hypothesis (en)
Diagram of the lock and key hypothesis (en)
Hydrogen bond between two water molecules. (en)
Positively charged sodium ion and negatively charged fluoride ion attract each other to form sodium fluoride under electrostatic interaction. (en)
Van der Waals force between two acetone molecules. The lower acetone molecule contains a partially negative oxygen atom that attracts partially positive carbon atom in the upper acetone. (en)