Question

28. When a gas jar containing air is inverted over a gas jar containing bromine vapour, the
vapour diffuse into air. Explain how bromine vapour diffuse into air.
29. Describe in your own words, what happens to the particles when salt dissolves in water,
30. Explain why, we can easily move our hand in air but to do the same through a plank of wood, we
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Answer 1

Answer:

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Answer 2

Air is a gas, it has more space in between particles. But solid block of wood is rigid, hence it is difficult to move our hands through it.