The 'Microscopic View' showed you how the hot, cold and warm water molecules move-their kinetic energy.

How can you compare the molecules' speed?

a. Molecules in the hot water move fast, molecules in the cold water move slowly, and molecules in the mixed warm water move at a medium speed.

b. Molecules in the hot water move fast, molecules in the cold water move slowly, and molecules in the mixed warm water move super fast.

c. Molecules in the hot water move slowly, molecules in the cold water move fast, and molecules in the mixed warm water move at a medium speed.

d. Molecules in the hot water move slowly, molecules in the cold water move slowly, and molecules in the mixed warm water move at a fast speed.

1 answer

The correct answer is:

a. Molecules in the hot water move fast, molecules in the cold water move slowly, and molecules in the mixed warm water move at a medium speed.

In general, the speed of water molecules is influenced by their temperature: hotter water has molecules that move faster due to increased kinetic energy, while colder water has slower-moving molecules. Mixed warm water will have a speed that is intermediate between the hot and cold molecules.