Question

How can you show that some solids like sugar, salt are soluble in water whereas solids like chalk powder and sand are not soluble in water?
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Answer 1

Answer:

Collect samples of sugar, salt, chalk powder and sand. Take four beakers. Fill each one of them about two-third with water. Add a teaspoonful of sugar to the first beaker, salt to the second, chalk powder to the third and sand to the fourth. Stir the contents of each beaker with a spoon/stirrer. Wait for a few minutes and observe what happens to the substances added to the water.

Note down your observations in the following table.

             Table: Mixing different solid materials in water

S. No.SubstanceDisappears in water / does not disappear  1.SugarDisappears completely in water  2.SaltDisappears completely in water  3.Chalk powderDoes not disappear in water  4.SandDoes not disappear in waterInference: (i) Sugar and salt are soluble in water. 

                 (ii) Chalk powder and sand are insoluble in water.

Answer 2

Answer:

sry I don't know

Explanation:

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