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Copy down the exercise to your science exercise book. Remember to write the questions and leave the allotted number of lines indicated in brackets. Do not write the answers yet. EXERCISE ON SEPARATING MIXTURES 1. Identify and name the separation methods given below. (Draw neat and clear diagrams with labels. Use pencil for drawing the diagrams) a. b. ------------------------------------ ----------------------------- 2. Complete the given table. (Copy down the table in landscape way, on a new page of your exercise book) Separation method Definition - --------------------------------------------- --------------------------------------------- Used to separate insoluble solid, from a liquid using a sieve/porous membrane. Used to separate two miscible liquids, by vapourising and condensing them. Used to separate a soluble solid, from a solution, by boiling off the liquid. Used to separate dissolved chemical substances, by passing through a chromatography paper. Examples of mixtures - -------------------------------------- - -------------------------------------- - -------------------------------------- - -------------------------------------- - -------------------------------------- - -------------------------------------- - -------------------------------------- - -------------------------------------- 3. Explain how you can separate the components of the given mixtures. a. A mixture of rice, flour and chickpeas. (leave 4 lines) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------b. A mixture of iron powder, sand and salt. (leave 7 to 8 lines) -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
