Question
The graph below shows a heating curve. What is occurring at the plateaus or flat sections on the heating curve?
*
1 point
Captionless Image
The temperature is decreasing.
The temperature remains unchanged.
The temperature is increasing.
The temperature varies unpredictably.
*
1 point
Captionless Image
The temperature is decreasing.
The temperature remains unchanged.
The temperature is increasing.
The temperature varies unpredictably.
Answers
GPT-4o mini
At the plateaus or flat sections on a heating curve, the temperature remains unchanged. During these sections, a substance is undergoing a phase change (for example, melting or boiling), where energy is being added but is used to change the state of the substance rather than to increase its temperature.