7. Explain how changes in temperature affect the particle motion of a substance. (3 points)
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of theparticles determines the state of matter of thesubstance. The end result of increased molecular motion is that the object expands and takes up more space.
You must be logged in to post a comment.