Pizza Rolls 3E
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Pizza Rolls 3E
Can someone explain why it is false that removing heat from the system is exothermic and the temperature will decrease?
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Re: Pizza Rolls 3E
This is false because in phase changes heat can be removed but the temperature will not change. If you look at a heating curve, you'll see that temperature stays constant during a phase change despite the change in heat. i.e. When ice is in the process of melting into water (phase change), heat can be added or removed but the temperature will still remain at 0 degrees Celcius.
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Re: Pizza Rolls 3E
The first part of the statement, that removing heat from a system will be exothermic is true because heat is leaving the system. However as said before phase changes play a role in not changing temperature because heat can be added to go from one phase to the next but not change the temperature in any way.
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Re: Pizza Rolls 3E
If you look at the heating curve, we see that at phase changes the curve is a straight line. At these sections we see that as heat is being added on the x-axis, the temperature of y axis remains the same.
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Re: Pizza Rolls 3E
This is false because during phase changes, the removal of heat does not necessarily cause temperature to decrease. This can be seen by the plateaus on heating curves.
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