12.4—Interpret the natural direction of change as being in the direction of increasing total entropy (positive entropy change)

Be able to interpret the natural direction of change as being in the direction of increasing total entropy (positive entropy change), including gases spread spontaneously through a room.

Use —interpret the natural direction of change as being in the direction of increasing total entropy (positive entropy change) to connect the rule to the data and decision in the question.

This matters because —interpret the natural direction of change as being in the direction of increasing total entropy (positive entropy change) determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —interpret the natural direction of change as being in the direction of increasing total entropy (positive entropy change) to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —Interpret the natural direction of change as being in the direction of increasing total entropy (positive entropy change) is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.