Select the best answer for the question.

4. What happens to a substance at critical temperatures?
A. The substance changes its state if it continues gaining or losing thermal energy
B. The substance can't lose any more thermal energy.
C. The substance can't change its state, only its temperature.
D. The substance changes its state only if it gains thermal energy.

Question

Select the best answer for the question. 
 
4. What happens to a substance at critical temperatures? 
A. The substance changes its state if it continues gaining or losing thermal energy 
B. The substance can't lose any more thermal energy. 
C. The substance can't change its state, only its temperature. 
D. The substance changes its state only if it gains thermal energy.

GinnyAnswer · Answer

At critical temperatures, a substance can no longer exist in its liquid state regardless of pressure, which means that any further changes in thermal energy will lead to a change in state. The correct answer to the question is A, indicating that the substance would indeed change its state with changes in thermal energy. All other options misrepresent the behavior of substances at critical temperatures. ;

Answered by GinnyAnswer | 2025-07-04

Answer (1)

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