Separation Methods and Crystallisation

Vocabulary flashcards on mixture separation methods, crystallisation conditions, and the purification of copper sulphate based on lecture notes.

Mixtures

Compositions made of two or more pure substances (elements or compounds) that are not chemically combined.

Separation of Mixture Components

The process of separating individual pure substances from a mixture so that their unique characteristic properties can be studied and used accordingly.

Crystallisation (Separation Criteria)

A separation method used for two solids where one compound is present in a small quantity and both solids are soluble in the same solvent.

Copper Sulphate Purification

A specific application of crystallisation used to purify copper sulphate by removing small amounts of unwanted impurities such as $NaCl$.

Role of Sulphuric Acid in Crystallisation

An additive used during copper sulphate crystallisation to prevent unwanted reactions, make pure crystals, and support the dissolution of residual copper or copper oxide to form copper sulphate.