Explain that this is a solid. We call this state liquid. They spread out a little bit, but they stay inside their container. Have the students bounce slightly and push apart but stay inside the circle. Using the cues Hot, Warm, Cold, etc, or Solid, Liquid, Gas, have them show by their actions what the molecules would do in that state.
Discussion -Now discuss the experiment from earlier in the lesson.
Ask for ideas on what the molecules were doing inside the balloon. This provides a good basis of understanding for further studies of matter. Students could be asked to begin a chart of solids, liquids, and gases using words or pictures.