Pure Substances and Mixtures — CHEMISTRY STD 6 — Question

a. Principle of handpicking – This method is based on the difference in size, colour or shape of the constitutent particles.
b. Principle of Winnowing – This method is based on the difference in the weights of the constituent particles.
c. Principle of Filtration – This process is used for separating the constituents of a heterogeneous solid-liquid mixture in which the solid particles are lighter and insoluble in the liquid.
d. Principle of Evaporation – The liquid constituent of the mixture evaporates leaving behind the solid constituent,
e. Principle of use of a separating funnel – The method works when two liquids are immiscible. The heavier liquid forms the lower layer and the lighter liquid forms the upper layer.