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
the ice block absorbs heat from the atmosphere and its temperature remains constant as it melts
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Discussions (7)
Maxmaetinez is 100 percent right. The heat absorbed is a latent heat of fusion which changes a solid to a liquid WITHOUT A CHANGE IN TEMPERATURE.So, option E is d Correct option.
Myschool, the correct answer is E and not C. The heat absorbed from the atmosphere is known as latent heat which causes change of state(in this case from solid to liquid). Also, it is a "hidden" heat which cannot be detected by a thermometer, hence, temperature remains constant.
Since this is talking about latent heat
There isn’t supposed to be any temperature change
Option E is correct since we're talking about change of state from ice to liquid. Scientifically speaking, only Latent heat occurs here, in other words there is no observable change in temperature
Myschool, the answer is C because in option E,how can heat be absorbed continually and then temperature remaining constant,so it's not possible. The option is C.
