WHAT TYPE OF SOLID SUBLIMES? We all know that ice melts before it evaporates. In sublimation, the liquid phased is omitted.

Dissociation is the breaking down of a compound into elements and the process is usually reversible.

In 1784, a French physicist and clergyman named Jean Antoine Nollet made an interesting discovery. He filled a pig’s bladder with a concentrated solution of alcohol. He then put the bladder in water and the bladder expanded! This interesting process Read More …

Do you know that the cloudy water syndrome in a fish tank is caused by colloids? Over a period of time, organic waste produced by the fish and algae in the tank are turned into nitrates. These particles are interspersed Read More …

Irregular motion of suspended particles is called “Brownian motion”. Watch an interesting Youtube video on the discovery of Brownian Motion by British botanist Robert Brown Robert Brown was a Scottish botanist who first discovered the Brownian motion. He noticed random Read More …

Molality is defined as the number of moles of solute per 1 (kg) of solvent. Solute = particles you dissolve Solvent = the liquid you use for dissolving the particles Example Calculate molality (m) of 29.8 g of glucose (C6H12O6) dissolved in Read More …

Nonpolar molecules do not dissolve readily in water Nonpolar molecules do not become hydrated – they are repelled by water The molecules are insoluble or almost insoluble in water Oils and fats are examples of hydrophobic substances. For example, if you mix Read More …