Summary Manipulate materials and decide if the physical change is reversible or not. Then make ooblek. Science content Chemistry: Physical Changes, Solutions, Mixtures and Separating (2, 4, 5, 6) Activities in this lesson Physical change introduction and reversibility Oobleck States of matter (and temperature) in Water Procedure Introduction to physical change stations, followed by discussion of which physical changes are reversible. Make ooblek - a physical change. It is reversible and can be seen when water evaporates from a small drop of ooblek leaving the powdery cornstarch behind. Study a physical change, water changing state, in more detail, by measuring the temperature of water in different states. Grades taught Gr 2
