This discussion can be found in Google Docs: Discussion: Stoichiometry Inquiry Game

To make your own copy to edit:

• If you want a Google Doc: in the file menu of the open document, click “Make a copy.” This will give you your own Google Doc to work from.
• If you want a PDF or Word file: in the file menu of the open document, click “Download” and select the file type you would like to have (note: depending on the file type you select, the formatting could get jumbled).

In this activity, you will be able to play a “game” designed to help reinforce your understanding of stoichiometry and limiting reactants. During this simulation you will complete achieve the following:

• Predict the amounts of products and leftovers after reaction using the concept of limiting reactant
• Predict the initial amounts of reactants given the amount of products and leftovers using the concept of limiting reactant
• Translate from symbolic (chemical formula) to molecular (pictorial) representations of matter
• Explain how subscripts and coefficients are used to solve limiting reactant problems

Instructions

1. Go to this PhET link and run the simulation by clicking “Game” (with the smiley face).
2. Play all levels of the game with nothing hidden (click the “Show All” button) and record your scores. Play as many times as you want until you feel comfortable.
   • While you are playing, take notes about what aspects of the game are helping you understand the relationship between reactants and products. This should demonstrate comprehensive self-evaluation.
3. Play all levels of the game with the molecules hidden (click the “Hide Molecules” button) and record your scores.
   • While you are playing, take notes about what aspects of the game are helping you understand the relationship between reactants and products. This should demonstrate comprehensive self-evaluation.
4. Post the following information to the discussion board:
   1. Your scores from the first round, and your most important insight from this step.
   2. Your scores from the second round, and your most important insight from this step.
   3. Compose a 4-6 sentence paragraph explaining stoichiometry and limiting reactants. Be sure to include the words subscript and coefficient in your explanation of how to solve these types of problems.

This PDF contains the full instructions for the activity: Limiting Reactants in Chemical Reactions (PhET Activity) pdf