Which expands most for increases in temperature: solids, liquids, or gases?
To identify: Whether solids, liquids or gases will expand the most for temperature rise.
Answer to Problem 16A
Gases
Explanation of Solution
Introduction:
The rise in temperature of a substance leads to the expansion of that substance. This is known as thermal expansion. This is because on heating a substance, the kinetic energy of its molecules increases and starts to move freely.
In the case of solids, particles are closely packed so that they are not permitted to move freely. Hence thermal expansion is very less in solids. In the case of liquids particles can move freely compared to that in solids. Hence the liquids undergoes thermal expansion little more compared to that in solids. And, in the case of gases particles are free to move far apart and hence they undergoes thermal expansion to a great extent.
Chapter 21 Solutions
Conceptual Physics: The High School Physics Program
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