For a simple compound, present a drawing that shows the number of particles in the system does not change as a result of a phase change. (prerequisite)
Compounds, elements, and mixtures are categories used to organize matter. Students organize materials into these categories based on their chemical and physical behavior. Students understand the structure of the atom to make predictions about the physical and chemical properties of various elements and the types of compounds those elements will form. An understanding of the organization the Periodic Table in terms of the outer electron configuration is one of the most important tools for the chemist and student to use in prediction and explanation of the structure and behavior of atoms.
Properties of solids, liquids, and gases are explained by a model of matter that is composed of tiny particles in motion. (prerequisite)