Based on the analysis of the heating curve, here is the solution to the problem:
The graph shows how the temperature of a substance changes as energy is added. The flat sections (plateaus) represent phase changes where the temperature remains constant, while the sloped sections represent the substance being heated within a single phase.
1.
Freezing Point Temperature: The freezing point is the same as the melting point. The first plateau (segment B) occurs at 0°C, which is when the solid melts into a liquid. Therefore, the freezing point is also 0°C.
2.
Boiling Point Temperature: The second plateau (segment D) occurs at 10°C, which is when the liquid boils and turns into a gas. Therefore, the boiling point is 10°C.
3.
Melting Point Temperature: The melting point is the temperature at which the solid turns into a liquid. This occurs during the first plateau (segment B) at 0°C. Therefore, the melting point is 0°C.
For the next set of questions, we identify the segments corresponding to each phase:
4.
Range where a solid is being heated: This is the initial sloped section before the first plateau, where the solid's temperature is increasing. This is segment A.
5.
Range where a liquid is being heated: This is the sloped section between the two plateaus, where the liquid's temperature is increasing after melting and before boiling. This is segment C.
6.
Range where a gas is being heated: This is the final sloped section after the second plateau, where the gas's temperature is increasing. This is segment E.
Summary of Answers:
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Freezing Point: 0°C
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Boiling Point: 10°C
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Melting Point: 0°C
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Solid Heating: Segment A
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Liquid Heating: Segment C
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Gas Heating: Segment E
Parent Tip: Review the logic above to help your child master the concept of heating curve worksheet answers.
