This 27-page science mini-book was created to help teach the Next Generation Science Standards for 2nd grade in structure and properties of matter. It covers the following principles: what is matter, different states of matter, how matter can change, reversing states of matter, and observable properties of matter. It includes the basic 3 states: liquid, solid, and gas, as well as a 4th state: plasma. It also covers the 6 ways matter can change: melting, freezing, boiling, condensation, depositio