PhET is a collection of over 100 simulations for teaching and learning science. The said simulations are all free on the web. Anyone can run these simulations online or download in a computer. PhET has simulations in Chemistry and Physics, and a growing number in Biology, Earth Science, and Mathematics.

To explore the Reactants, Products and Leftovers simulation, click on the link below:

https://phet.colorado.edu/sims/html/reactants-products-and-leftovers/latest/reactants-products-and-leftovers_en.html

To view and download the PhET Tips for Teachers on Reactants, Products and Leftovers simulation, click on the link below:

https://phet.colorado.edu/services/download-servlet?filename=/teachers-guide/reactants-products-and-leftovers-html-guide_en.pdf

In these worksheets, the PhET Interactive Simulation "Reactants, Products, and Leftovers" was used in Explore (Let Us Make Sandwiches! worksheet) and Evaluate (Let Us Produce Ammonia! worksheet) parts of the lesson about Amount of Reactants and Products.

For Let Us Make Sandwiches! worksheet, the objective is to relate the real-world example of making sandwiches to chemical reactions.

Teacher's Copy: https://drive.google.com/file/d/1kU5bs_lId9jPhtMUYWaSdAmvk1He7Bc0/view?usp=sharing

For Let Us Produce Ammonia! worksheet, the objective is to identify mole ratios of reactants and products from a balanced chemical equation.

Teacher's Copy:

https://drive.google.com/file/d/1vXDCsrVs6wpUOIdKWtwZsmZ5eMktQXP1/view?usp=sharing