Reactants, Products, Leftovers - PhET Reactants, Products and Leftovers Download Run Now! Version: 1.00 (change log) 1,372 kB Create your own sandwich and then see how many sandwiches you can make with different amounts of ingredients. Do the same with chemical reactions. See how many products you can make with different amounts of reactants. Play a game to test your understanding of reactants, products and leftovers. Can you get a perfect score on each level? in Public bookmarkswith chemicalgameproductsreactantsreactionssimulations