A hot metal cylinder is placed in water at room temperature in a closed system. Which statement is NOT true concerning heat flow?
a) The metal exhibits an endothermic change.
b) The final temperature of the metal and the water will be the same.
c) Water exhibits an endothermic change.
d) Heat flows from the metal to the water.
Do you know the meaning of endothermic and exothermic.
Do you think the hot metal will cool and the cool water will heat up and eventually both will be at the same temperature. Knowing this what do you think is the answer?
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To determine which statement is not true concerning heat flow in this scenario, let's examine each statement:
a) The metal exhibits an endothermic change.
An endothermic change refers to a process that absorbs heat from its surroundings. In this case, when the hot metal cylinder is placed in water, heat will transfer from the metal to the water. Therefore, this statement is true.
b) The final temperature of the metal and the water will be the same.
When two objects with different initial temperatures come into contact, heat will transfer between them until they reach a common final temperature. This is known as thermal equilibrium. Since the metal and water are in a closed system and are thermally connected, heat will flow between them until they reach the same final temperature. Therefore, this statement is true.
c) Water exhibits an endothermic change.
Since the water absorbs heat from the hot metal cylinder, the temperature of the water will rise. This indicates an increase in the thermal energy of the water, which implies it is undergoing an endothermic change. Therefore, this statement is true.
d) Heat flows from the metal to the water.
When a hot object is placed in contact with a cooler object, heat flows from the hotter object to the cooler one until they reach thermal equilibrium. In this scenario, the hot metal cylinder transfers heat to the water until they both reach the same final temperature. Therefore, this statement is true.
By process of elimination, the statement that is NOT true concerning heat flow in this scenario is: b) The final temperature of the metal and the water will be the same.