To accurately determine what is happening at portion C of the graph that shows the phase change for water, it's important to understand the typical phase change graph for water:
- When water is heated (solid to liquid to gas), there are intervals where the temperature changes (temperature increases), and intervals where the temperature remains constant as the substance changes phase (during melting and boiling).
- During melting (solid to liquid) and boiling (liquid to gas), the temperature remains constant while energy is added, which is used to change the phase of the substance.
- The temperature increases when the substance is in a specific phase (solid, liquid, or gas) where it's being heated.
If portion C corresponds to a phase change, then based on this understanding:
- If portion C is during a phase change (like melting or boiling), then the energy is increasing while the temperature remains the same.
- If portion C is where temperature is increasing (like the water heating up as a liquid), then the energy is increasing and the temperature is also increasing.
Without seeing the graph, the most common portion of concern at phase change points would be during melting or boiling.
With typical assumptions about water's phase change graph, the best answer would likely be:
The energy is increasing, but the temperature stays the same.
3 answers