Ben wants to model how the motion of particles changes with temperature. He
considers water in an iron pot. Ben draws a model to show how the water
particles and iron particles move at room temperature. Then, he draws a second
model to show how the water particles and iron particles move as the pot of
water is heated. How should Ben’s second model differ from the first?

A. The water particles should vibrate faster, and the iron particles should not
move.
B. Both the water particles and the iron particles should slide past each other
faster.
C. The water particles should slide past each other faster, and the iron
particles should vibrate faster.
D. The water particles should move freely in all directions, and the iron
particles should slide past each other faster.