A block of ice at its melting point is left on a table in the atmosphere and observed to melt gradually. Which of the following statements is true about the melting process?
- the reaction force of the table on the ice breaks the ice into water molecules
- heat extracted from the ice block makes the ice block cold
- the ice block absorbs heat from the atmosphere and its temperature rises
- the atmosphere absorbs heat from the ice block and its temperature falls
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the ice block absorbs heat from the atmosphere and its temperature remains constant as it melts
The correct answer is: E
Explanation
The heat of fusion is the quantity of heat necessary to change of a solid to a liquid with no temperature change