Answer: _X_A. It shows how the temperature of the substance falls as heat is removed.
Explanation: if the choices are as follow:
A. It shows how the temperature of the substance falls as heat is removed.
B. It shows how the temperature of the substance changes when heat is applied.
C. It shows the increase in the average kinetic energy of the particles.
D. It shows how heat absorption affects the motion of particles.
E. It shows how energy gain causes the temperature to fall.
Complete Question ;
which statement is true for a cooling curve?
A. It shows how the temperature of the substance falls as heat is removed.
B. It shows how the temperature of the substance changes when heat is applied.
C. It shows the increase in the average kinetic energy of the particles.
D. It shows how heat absorption affects the motion of particles.
E. It shows how energy gain causes the temperature to fall.
Answer ;
The statement which is true for a cooling curve is that It shows how the temperature of the substance falls as heat is removed.Hence, Option (A) is correct
Cooling curve of a substance is a graph of the variation of the temperature with time as it is allowed to cool.
The gradient of the cooling curve is related to the heat capacity, the thermal conductivity of the substance, and the external temperature.
Therefore, The statement which is true for a cooling curve is that It shows how the temperature of the substance falls as heat is removed.Hence, Option (A) is correct.
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