The term colloid describes a system consisting of one substance finely dispersed in another, normally a solvent. The size of particles found in a colloidal dispersion range between 1 and 1000 ...

This can be visualised by considering the specific example of surfactant molecules at the air-water surface, shown in the figure right. The polar hydrophilic heads remain solvated in polar water ...

It is also one of the few substances that exist in all three phases on the earth. And speaking of the earth, over 70% of the earth’s surface is water! Find out more with this selection of ...

The ideal salad dressing is more than a blend of ingredients, it’s a scientific triumph. The secret to perfect salad ...