Which of the following show expansion on heating and contraction on co...
Expansion and Contraction of Matter
Expansion and contraction are the physical properties of matter. Matter can be in the form of solids, liquids, or gases. Let's discuss which of them show expansion on heating and contraction on cooling.
Solids
- Solids have a definite shape and volume.
- They possess a strong intermolecular force of attraction.
- On heating, solid expands due to the increase in the intermolecular distance.
- On cooling, solid contracts due to the decrease in intermolecular distance.
Liquids
- Liquids have a definite volume but no definite shape.
- They possess a weak intermolecular force of attraction.
- On heating, liquids expand due to the increase in kinetic energy of the molecules.
- On cooling, liquids contract due to the decrease in kinetic energy of the molecules.
Gases
- Gases have neither a definite shape nor a definite volume.
- They possess a negligible intermolecular force of attraction.
- On heating, gases expand due to the increase in kinetic energy of the molecules.
- On cooling, gases contract due to the decrease in kinetic energy of the molecules.
Conclusion
All three states of matter, i.e., solids, liquids, and gases, show expansion on heating and contraction on cooling. Hence, the correct answer is option 'D'.
Which of the following show expansion on heating and contraction on co...
All of these i.e solids,liquids,gases all expand on heating and contracts on cooling as heat energy makes particles moves faster and vice versa.
for solid: railway track,electrical power cables hung and tighten
for liquids:mercury in thermometer
gases:dish cooking in kitchen and ice cream kept open,hot air balloon
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