Quantities | Moles } Stoichiometry | Significant digits

This article comes from a blog called Sustainable School Teacher . I recommend you watch the blog’s 10-minute video because Brandie outlines her idea to introduce a hands-on approach to stoichiometry. Once you watch this video you will want to investigate her other ideas.

The determination of the limiting and excess reagents in a chemical reaction tends to be a challenge for many chemistry students. Teachers have used the making of cookies and hamburgers, or combinations of nuts and bolts, among other common items to help students understand these concepts. While students understand that if you have 10 hamburger patties and only 6 pickles one can only make 3 hamburgers, if each requires 2 pickles.