Question
When liquids are heated, they:
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:
Expansion is dependent on the intermolecular spaces in atoms.
The correct answer is: Expand more than solids but less than gases
- When liquids are heated, they expand more than solids but less than gases
- Expansion in any form that occurs when the molecules gain energy and start moving away from each other. In the case of solids, when the molecules gain energy, they get excited and try to move but since in solids, these molecules are densely packed, they are unable to move the part from a certain point. Thus, solids do not expand much.
- On the other hand, gases contain almost free molecules with large intermolecular spaces. In the case of expansion, these molecules move at a fast speed and expand. Now, liquids have more intermolecular space than solids and less than that of gases. Therefore, they expand more than solids but less than gases.
Some liquid metals are capable of expanding through freezing.
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