During natural processes, heat transfer is always from:
A) gases to solids.
B) solids to liquids.
C) warmer to cooler substances.
D) cooler to warmer substances.

Question

Quizplus · Accepted Answer

Heat always flows from warmer substances to cooler substances. This is known as the second law of thermodynamics. It is the reason why ice cubes melt in a warm room and why we feel cold when we touch something colder than our body temperature. Heat transfer from gases to solids or solids to liquids can occur, but it is not always the case and depends on the specific conditions of the system.

During Natural Processes, Heat Transfer Is Always From