MT.S2. Students, through the inquiry process, demonstrate the knowledge of properties, forms, changes and interactions of physical and chemical systems.
S2.1. Classify, describe, and manipulate the physical models of matter in terms of: elements, and compounds, pure substances and mixtures, atoms, and molecules
S2.1.gr5.A. Identify common elements
S2.1.gr5.B. Define elements as pure substances
S2.1.gr5.E. Explain the relationship between elements, compounds, pure substances, and mixtures.