Okay so dipole-dipole interactions would occur between polar molecules such as water. The H has a + charge while O has a - charge. Dipole- induced dipole(or dispersion forces) would be like a molecule that has a polar part to it such as a -COOH group and then a nonpolar part such as a long hydrocarbon chain. The nonpolar part has no charge except the transient charge among the different atoms. I hope that helps Solution Okay so dipole-dipole interactions would occur between polar molecules such as water. The H has a + charge while O has a - charge. Dipole- induced dipole(or dispersion forces) would be like a molecule that has a polar part to it such as a -COOH group and then a nonpolar part such as a long hydrocarbon chain. The nonpolar part has no charge except the transient charge among the different atoms. I hope that helps.