This quick and easy activity has students enjoying a sweet treat in order to practice calculating molar mass and doing a molar conversion! When I first introduce molar conversions I start with just atomic masses of single elements. This particular activity introduces calculating the molar mass of a compound (sugar) with a step-by-step guide. The students then use this molar mass along with the mass of sugar they have dissolved from a piece of Double Bubble gum (you must purchase a piece of Double Bubble for each student for this activity) to calculate the number of sugar molecules they dissolved by chewing a piece of gum. Students get the mass of sugar they dissolved by massing their gum before and after chewing it.