Dutch physicist, Johannes van der Waals, attractions between the molecules.

A weak interaction involving a hydrogen atom and a fluorine, oxygen, or nitrogen atom from a different molecule.

Is a combination of two or more substances in which each substance retains its individual characteristics and properties.

Another name for a homogeneous mixture.

A substance in which another substance is dissolved.

Is the substance that is dissolved in the solvent.

Substances that release hydrogen ions when they are dissolved in water.

Substances that release hydroxide ions (OH-) when they are dissolved in water.

The measure of concentration of H+ in a solution.

Mixtures that can react with acids or bases to keep the pH within a particular range.