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Question
Describe simple experiment to show that particles of matter are closely packed in solids and less in liquids.
Solution
Experiment – To show that particles are closely packed in solids and less in liquids
Procedure –
- Take a measuring cylinder and add 100 ml. of water to it.
- Add crystals of sugar [solid] to the water and stir carefully to obtain a sugar solution.
- The volume of water after the addition of sugar remains the
same i.e. at 100 ml. mark.
Conclusion –
- Particles of a liquid [e.g. water] are less closely packed.
- Particles of a solid [e.g. sugar] are closely packed.
- The sugar particles fill the intermolecular spaces, which must be existing between the water molecules, and hence the level of water in the measuring cylinder does not rise.
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