Reactants, Products and Leftovers

Download: http://phet.colorado.edu/sims/reactants-products-and-leftovers/reactants-products-and-leftovers_en.jnlp

Link to Original Site: http://phet.colorado.edu/en/simulation/reactants-products-and-leftovers

1. Using the "Sandwich Shop" tab, adjust the components of a Cheese Sandwich or a Ham and Cheese Sandwich which will qualify as a product in the reaction. Then, adjust the reactants at the bottom left of the screen and observe what forms for products and leftovers. What are reactants, products and leftovers? What happened as you adjusted the amount of reactants? What happens when you adjust the components for a Ham and Cheese Sandwich?

After using the sandwich shop tab, i have discovered that reactants are the materials used at the beginning, to create the product(s). The leftovers are the reactants that there was too much of. I have also discovered that the amount of products and leftovers is determined solely on how much reactants you have, and how many of each you need to create a product.

2. Now, using the "Real Reaction" tab, play with the various settings for the "Make Ammonia," "Make Water" and "Combust Methane" experiments listed at the top of the screen. What can you learn from this? What are the reactants, products and leftovers in each of the reactions?

After doing real reactions I learned a few different things. I already knew how to create water, but i never knew how to create ammonia, or that Methane, when combusted creates water. these were the compounds 2*H2+O2=2*H2O (Making Water), N2+3*H2=2*NH3 (Making Ammonia), CH4+2*O2+CO2=2*H2O (Combusting Methane).