Students examine some objects and substances in a science lab, looking at each close-up and learning more about its nature. As they investigate the three states of matter, they classify the samples as solid, liquid, or gas. The time, as indicated by the calendar on the wall, is 1789. By conducting this experiment, students discover the principle of conservation of mass. The Sleuths investigate chemical reactions and changes in matter to get to the bottom of this baffling mystery.
Students investigate the three states of matter and the ways matter can be mixed and measured.
Students see how different elements are combined into mixtures and compounds.