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Put a piece of chalk into water. The chalk will emit bubbles in all directions . Explain this phenomenon.

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Put a piece of chalk into water. The chalk will emit bubbles in all directions . Explain this phenomenon.
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A chalk has pores in all directions which act as narrow capollaries. When a piece of chalk is immersed in water, the water enters into these capillaries and force the air out in the form of bubbles in water.
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