This animated video takes students inside a 'Virtual Science Lab' to demonstrate the four primary changes in states of matter using water as the subject. Through a clear, step-by-step experiment, the narrator guides viewers through the processes of melting, evaporation, condensation, and freezing. The video uses simple laboratory equipment—a beaker, burner, and cooling plate—to visually represent how adding or removing heat energy transforms matter from solid to liquid to gas and back again.