8.P.1.1 – Classify matter as elements, compounds, or mixtures based on how the atoms are packed together in arrangements.
8.P.1.2 – Explain how the physical properties of elements and their reactivity have been used to produce the current model of the Periodic Table of elements.
8.P.1.3 – Compare physical changes such as size, shape and state to chemical changes that are the result of a chemical reaction to include changes in temperature, color, formation of a gas or precipitate.
8.P.1.4 – Explain how the idea of atoms and a balanced chemical equation support the law of conservation of mass.