A special type of cohesion is surface tension. The tension on the surface of water occurs when water molecules on the outside of the system align and are held together by hydrogen bonding to create an effect similar to a net made of atoms.

Adhesion is the tendency of dissimilar particles or surfaces to cling to one another (cohesion refers to the tendency of similar or identical particles/surfaces to cling to one another). The forces that cause adhesionand cohesion can be divided into several types.

In order to understand how biological membranes function you need to know some basic and important concepts. A solution is a liquid that contains dissolved molecules. The liquid that dissolved the molecules (the “dissolver”) is known as the solvent and the substance that was dissolved (the “dissolvee”) is the solute.

In order to understand how biological membranes function you need to know some basic and important concepts. A solution is a liquid that contains dissolved molecules. The liquid that dissolved the molecules (the “dissolver”) is known as the solvent and the substance that was dissolved (the “dissolvee”) is the solute.

A solvent is the solution, liquid, or gas part of the solute concentration. Thedefinition of solute concentration is the amount of solutes/particles that are dissolved in a solution. Together the solute and the solvent become the solution.

A suspension is a heterogeneous mixture in which solute-like particles settle out of a solvent-like phase some time after their introduction. We apply the word 'suspension' when particles are big enough to eventually settle. If the particles are too small to ever settle, they are said to form a colloid.

Under normal circumstances this means that the concentration of hydrogen ions in acidic solution can be taken to be equal to the concentration of the acid. The pH is then equal to minus the logarithm of the concentration value.

An acid (from the Latin acidus/acēre meaning sour ) is a chemical substance whose aqueous solutions are characterized by a sour taste, the ability to turn blue litmus red, and the ability to react with bases and certain metals (like calcium) to form salts. Aqueous solutions of acids have a pH of less than 7.

Bases are substances that accept protons from acids. Hydrogen chloride (HCl) is a gas. Its two atoms are held together by a shared pair of electrons.

A buffer (more precisely, pH buffer or hydrogen ion buffer) is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. Its pH changes very little when a small amount of strong acid or base is added to it and thus it is used to prevent changes in the pH of a solution.