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Upon heating a copper sample will expand, leading to a lower density?

A) True
B) False

User Cyrax
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1 Answer

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Answer;

The above statement is true

upon heating a copper sample will expand, leading to a lower density

Step-by-step explanation;

-The density of solids decreased with increase in temperature and vice versa. The increase in temperature causes the volume of the solid to increase which as a result decreases the density as Density=Mass/Volume. The temperature of a body is the average kinetic energy of the molecules present in it.

In other words; The temperature of a body is the average kinetic energy of the molecules present in it. Therefore; when heat is supplied ( or temperature is increased) the average kinetic energy increases which increases the volume and thus density decreases.

User Diego Fortes
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