Chemical changes result in the formation of new substances, but how can you tell when a chemical change has occurred? In the brand-new Chemical Changes Gizmo, students make observations and measurements to detect chemical changes, including changes in color, temperature, or pH, formation of a gas or precipitate, and more. Tools such as a thermometer, magnifier, phenol red indicator, glowing splint, and even a nose a provided.
As students gather evidence of chemical changes, they are introduced to other fundamental concepts including conservation of matter, classification of chemical reactions, and exothermic and endothermic reactions. Best of all, most of the reactions shown in the Gizmo can be demonstrated in the classroom!