With the Classifying Matter: A “Nuts-and-Bolts” Demonstration—ChemTopic™ Lab Activity, help students visualize the abstract classification of matter by using actual nuts and bolts to demonstrate how elements, compounds or mixtures may look similar “on the outside,” but can differ vastly “on the inside.” Available as part of the Introduction to Chemistry—ChemTopic™ Labs digital collection. Click the Price link for digital collection pricing.