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=Substance and Type of Substances

=Mixture, Homogeneous Mixtures, Heterogeneous mixtures

=Solution, Properties of Solution

=Suspension, Properties of Suspension

=Colloid, Properties of Colloid

=Tyndall Effect

=Method of Separating the Component of Mixture

=obtain the coloured component (dye) from a ink

=Use of separating funnel




=Method of Simple Distillation

=Method of Fractional Distillation

=Obtain Different Gases from Air

=Crystallisation, Application of Crystallisation

=Physical Change

=Chemical Change

=Diagram of water purification system

=Differentiate between mixtures and compounds.

=Classification table of matter.


Explain Crystallisation.

Explain Crystallisation.
Answer: Crystallisationis a process that separates a pure solid in the form of its crystals from a solution. The crystallisation method is used to purify solids.

For example, the salt we get from sea water can have many impurities in it. To remove these impurities, the process of crystallisation is used.
Applications of crystallisation
• Purification of salt that we get from sea water.
• Separation of crystals of alum (phitkari) from impure samples.

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Explain Crystallisation.

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