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    4. why bubbles are emitted when a piece of chalk is immersed in water
    why bubbles are emitted when a piece of chalk is immersed in water

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    0  Views: 1200 Answers: 1 Posted: 13 years ago
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      Chalk is a porous material so it is not solid but has air cells in it, so when you immerse it in water the air is driven out. If you put the chalk in water for a few hours, no more air will come out as it is saturated. Try it.

      13 years ago. Rating: 0
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