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Is Matter Around Us Pure
Explain the following giving examples:
Suspension
A suspension is a heterogeneous mixture in which the solute particle do not dissolve but remain suspended throughout the bulk of the medium. A suspension has following characteristics:
(i) It is a heterogeneous mixture.
(ii) The particles of a suspension are greater than 100 nm and are visible to naked eye.
(iii) The particles of a suspension can scatter a beam of light.
(iv) The particles of a suspension settle down when left undisturbed for some time.
(v) The particles of a suspension can be separated from its mixture by filtration. Examples—Fine clay particles in water.
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Which separation techniques will you apply for the separation of the following?
Ammonium chloride from a mixture containing sodium chloride and ammonium chloride.
Which separation techniques will you apply for the separation of the following?
Small pieces of metal in the engine oil of a car.
Which separation techniques will you apply for the separation of the following?
Different pigments from an extract of flower petals.
Which separation techniques will you apply for the separation of the following?
Butter from curd.
Write the steps you would use for making tea. Use the words—solution, solvent, solute, dissolve, soluble, insoluble, filtrate and residue.
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