Chemistry
Grade-6
Easy
Question
When liquids are heated, they:
- Expand less than solids but less than gases
- Expand more than solids but less than gases
- Expand more in gases but more in solids
- All of the above
Hint:
Liquids have more intermolecular spaces than solids but are lesser than gases.
The correct answer is: Expand more than solids but less than gases
- On heating, the particles move rapidly.
- The intermolecular spaces increases.
- After a point when the particles have enough energy, they escape from the liquid as gas.
- Liquid changes its state to a gas and the process is called evaporation.
- Hence, liquids expand more than solids but less than gases.
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