SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Most matter ____ when heated.
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expands
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contracts
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solidifies
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condenses
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Explanation:
Detailed explanation-1: -Gases expand the most upon heating because the intermolecular space is more than in solids or liquids.
Detailed explanation-2: -Solid, liquid and gas expand when heated. They contract when cooled. The increase in volume of matter due to an increase in temperature is called thermal expansion.
Detailed explanation-3: -When a material is heated, the kinetic energy of that material increases and its atoms and molecules move about more. This means that each atom will take up more space due to its movement so the material will expand.
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