Students make quantitative and qualitative observations of food dye in hot and cold water then draw conclusions about particle motion and temperature. They plan and carry out an investigation to answer the question, “How does a pure substance change when thermal energy is added?” Then, students create a graph, analyze their data and draw diagrams of particles in motion. They summarize their learning with an original cartoon of a pure substance facing increased heat energy!

Students plan and conduct an investigation about the motion of vanilla molecules, create a graph, analyze data and observe a Skittle in water! Finally, students use evidence collected in the lab to support the claim “Molecules are in motion”.