Compare and contrast physical change vs. chemical change. Analyze the properties of substances before and after substances interact to determine if a chemical reaction has occurred.
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Describe the properties of solids, liquids, and gases. Develop models that predict and describe changes in particle motion, density, temperature, and state of a pure substance when thermal energy is added or removed.
Investigate the Law of Conservation of Mass by measuring and comparing the mass of a substance before and after a change of state.
Using a model in which matter is composed of particles in motion, investigate that when substances undergo a change in state, mass is conserved.