Is My Graph of Temperature vs. Time Correct for Heated Water with Constant Mass?

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SUMMARY

The discussion confirms that the graph of temperature versus time for heated water with constant mass is accurate. As water is heated from 25 degrees Celsius to 100 degrees Celsius, the temperature increases steadily. Upon reaching 100 degrees Celsius, the temperature remains constant while the water undergoes a phase change from liquid to vapor, consuming all the heating energy. This phase change results in a decrease in mass as water transitions to steam.

PREREQUISITES
  • Understanding of phase changes in water, specifically boiling.
  • Knowledge of temperature scales and measurement.
  • Familiarity with graphing temperature versus time.
  • Basic principles of thermodynamics related to heat transfer.
NEXT STEPS
  • Study the principles of latent heat and its role in phase changes.
  • Learn about the specific heat capacity of water and its implications in heating processes.
  • Explore the concept of energy conservation during phase transitions.
  • Investigate the effects of atmospheric pressure on boiling points of liquids.
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in thermodynamics and the behavior of water under heating conditions.

zabachi
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A question came for my physics exam that water was being heated and the graph showed that the mass of water remained constant from 25 degree celsius to 100 degree celsius and then started decreasing in mass. The question asked to draw a graph of temperature against time and i drew the temperature increasing for the amount of time that the mass of water remained constant. Is that correct?
 
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Yes, what you drew was correct. The water heats to the boiling point so the temperature rises. Once 100 C is reached, the temperature will remain constant as all the energy of heating is consumed by the water changing phase from liquid to vapor.
 

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