Question

The graph shows the changes in the phase of ice when it is heated.

Phase Change of Ice

Which of the following temperatures describes the value of C? (4 points)
100 °C, because it is the melting point of ice.
Oь
100 °C, because it is the boiling point of water.
Ос
Less than 100 °C, because Crepresents the temperature at which ice melts.
Od
Less than 100 °C, because Crepresents the temperature at which water evaporares.

Answer 1

100 degree celcius, because it is the melting point of ice ob

Answer 2

Answer: The correct answer is 100 °C, because it is the boiling point of water.

Explanation: A heating curve has two flat lines(Or plateaus). The first one is the melting point, the second one is the boiling point. In your problem, C is the second flat line, so it is boiling point.