Purity, formulations and chromatography GapFill

Substances which contain only one kind of element or compound are called  potablepurerefinedatomicsolidclean. They have a specific  volatilitymelting pointstrengthdensityflammabilitytransparency, which is often higher than that of  a dirtyan impurea blendedan unrefineda multiple-compounda subatomic substance, also known as  a polymera mixturean amalgama fusiona combinationan alloy. In a  blendselectionbrewfractionformulationconcoction such as a cleaning product or a fertiliser, every chemical has a specific purpose and is present in its correct  qualitystatetemperaturepositionpressurequantity.

Many mixtures containing coloured compounds can be separated using  polymerisationcondensationtitrationfiltrationdistillationchromatography. During this process, a  constantsolidstationarymotionlessstaticfirm phase, such as paper, is placed in a  variablefluidliquidflexiblemobilechangeable phase, such as water. The substances travel different  speedsthicknessesdirectionspathsdistancespatterns up the paper. Dividing the distance travelled by a substance by the distance travelled by the solvent gives the  efficiencypercentageD_s valueR_f valuepHsolubility.