4. Why do things expand on heating? in short answer
for class-5
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Answer:
Molecules within gases are further apart and weakly attracted to each other. Heat causes the molecules to move faster, (heat energy is converted to kinetic energy ) which means that the volume of a gas increases more than the volume of a solid or liquid.
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Answer. solid expand on heating because particles of matter loose there original configuration due to thermal energy provided in the form of heating radiation and expand due to vibrational motion of particles in a series.
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