4. What happens when chalk powder and sand are added to water? why?
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Answer: The chalk will also mostly settle out but the finer grains may stay in suspension - prevented from falling to the bottom by random collisions with the water molecules. A tiny proportion of the chalk will dissolve and another tiny proportion may react with dissolved carbon dioxide (in the form of carbonic acid).
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2
Answer:
The chalk will also mostly settle out but the finer grains may stay in suspension - prevented from falling to the bottom by random collisions with the water molecules. A tiny proportion of the chalk will dissolve and another tiny proportion may react with dissolved carbon dioxide (in the form of carbonic acid).
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