This lab is a GREAT way for students to visualize elements, mixtures, and compounds. Students will investigate a few numbered dishes, each that has a specific combination of nuts, bolts, and washers assembled or not assembled to represent chemical bonds. Students then investigate the contents of the dish, and determine if the dish best represents an element, mixture, compound, or mixture of compounds, or mixture of compounds and elements. The end of the activity has a great follow up with though