We are asked which change occurs in a sample of copper when it is warmed from room temperature to 95 oC?
Unless chemical reaction happens, the mass should stay the same.
The density of copper decreases as temperature increases (as does the density of most substances). Which change occurs in a sample of copper when it is warmed from room temperature to 95 oC?
A) The sample expands
B) The sample becomes heavier.
C) The sample becomes lighter.
D) The sample contracts.
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