Stoichiometry Made Simple!

Stoichiometry Made Simple!

Stoichiometry is the quanitative relationships between reactants and products in a chemical reaction!

Welcome! Stoichiometry can feel like an overwhelming topic that has too many steps! You are in the right place! This module will break down stoichiometric problems into smaller parts that will feel much more manageable! At the end of this lesson, you will be a stoichiometry superhero!

A photo depicting a chemist mixing multiple chemicals in flask surrounded by smoke.

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Learning Objectives

At the end of this module, students should be able to do the following:

• Students will be able to identify the reactants and products of a chemical reaction.
• Students will be able to understand the relationship between moles, mass, and particles.
• Students will be able to solve real-world stoichiometric problems, step by step.

An image of a lightbulb with multicolored arrows.

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Topic 1-Identifying Reactants and Products

Identifying Reactants and Products!

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Topic 1- Identifying Reactants and Products

What are Reactants and Products?

Reactants are the compounds that go into a chemical reaction. They are found on the left side of the reaction arrow. Products are compounds that result from a chemical reaction. They are found on the right side of the reaction arrow. Watch the video below for the basics on chemical reactions!

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https://www.youtube.com/watch?v=3zmeVamEsWI MooMoo Math and Science

Mini Quiz 1

What compound is a product in the following chemical reaction? 2H2 + O2 --> 2H2O

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Topic 2- Moles, Mass, and Particles

Moles, Mass, and Particles Oh My!

Click the following vocabulary words to learn more about them! Then, watch the video below!

Moles

Mass

Particles

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https://www.youtube.com/watch?v=smAf2o5unWU&t=13s The Organic Chemistry Tutor

Topic 2- Moles, Mass, and Particles

An image depicting atoms on a scale. On the left is one mole of carbon atoms, with a mass of 12 grams. On the correct scale is a mole of copper atoms with a mass of 63.5 grams.

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Mini Quiz 2

According to the periodic table, what is the mass of 1 mole of Iron?

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Reflection

So far we have learned

• Reactants and products of a chemical reaction

• Definitions of key terms such as mole, mass, and particles.
• The relationship between moles, mass, and particles.
• How to determine the mass of 1 mole of an element.

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Topic 3- Real World Stoichiometry

Application: Real World Stoichiometry!

Using our knowledge of moles, mass, and particles to solve stoichiometric problems!

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Topic 3 PhET

Click the PhET link on the right! Complete the attached worksheet, and submit it via email for credit:

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Topic 3- Real World Stoichiometry

Please watch the following video! After watching, answer the following questions:

According to the following reaction: 2 Al + 3 Cl2 --> 2 AlCl3

Question 3

Question 1

Question 2

The Organic Chemistry Tutor. (2017, approximately; published 8.1 years ago). Stoichiometry basic introduction, mole to mole, grams to grams, mole ratio practice problems [Video]. YouTube. https://www.youtube.com/watch?v=7Cfq0ilw7ps

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Test your knowledge!

Final Project!

Test what you've learned and reflect on your mastery of stoichiometry!

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Final Project Instructions

Choose one of the following real world scenarios:

Scenario 1: Cooking Chemistry Analyze a recipe as a chemical reaction. Calculate how much of each ingredient is needed to produce a specific amount of product (e.g., cookies, bread).

Scenario 2: Medical Chemistry Examine a drug synthesis or metabolic reaction. Calculate dosages or reaction yields.

Scenario 3: Environmental Chemistry Investigate a reaction related to pollution (e.g., acid rain, combustion of fossil fuels). Calculate the amount of pollutants produced or neutralized.

PROJECT REQUIREMENTS

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Project Rubric

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Submission of Final Project

Submit your final project by clicking the "submit here!" button on the left side of your screen!

Submit here!

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Do you have questions?

I am here to help you! Please reach out through email (nchri78@wgu.edu), or through Microsoft Teams!

Thank you for taking the course!

References

• GeeksforGeeks. (2025). Mole concept [Diagram]. In *Mole Concept – GeeksforGeeks*. Retrieved from https://www.geeksforgeeks.org/chemistry/mole-concept/
• (N.d.-a). Retrieved from https://www.youtube.com/watch?v=3zmeVamEsWI
• (N.d.-b). Retrieved from https://www.youtube.com/watch?v=smAf2o5unWU&t=13s
• The Organic Chemistry Tutor. (2017, approximately; published 8.1 years ago). Stoichiometry basic introduction, mole to mole, grams to grams, mole ratio practice problems [Video]. YouTube. https://www.youtube.com/watch?v=7Cfq0ilw7ps
• Learning Objectives Lightbulb. (2014). Extended Learning Institute, Northern Virginia Community College. Retrieved from https://novaonline.nvcc.edu/TOTAL_Workshops/LearningObjectives_v4/index.html
• Reactants and Products Visual. (n.d.). Labster. Retrieved from https://images.my.labster.com/4c2957d4-53b4-4b15-91c7-d3282be6d137/ReactantProduct.en.png
• Shaiith. (2019). Picture of beakers in a science lab with steam. ThoughtCo. Getty Images. Retrieved from https://www.thoughtco.com/thmb/6MsMmUK27akFhb8i89kj95J5iko=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-545286316-433dd345105e4c6ebe4cdd8d2317fdaa.jpg

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

One mole of any element has a mass equal to the average atomic mass on the periodic table. Depicted here is 1 mole of copper atoms, which has a mass of 63.5 grams. This is because the atomic mass of copper is 63.5 g/mol. One mole of copper contains 6.02x1023 particles because the mole is a counting number.

• Scenario Description: Explain the real-world context.
• Balanced Chemical Equation: Include and explain.
• Mole Calculations: Show conversions between mass, moles, and particles.
• Limiting Reactant Analysis: Identify and justify.
• Percent Yield: If applicable, calculate and interpret.
• Visuals: Include diagrams, tables, or graphs.
• Reflection: Discuss what was learned and how stoichiometry applies to real life.

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

To navigate between pages, please use the navigation tool in the top left corner of every page! If you need assistance locating the interactive parts of a page, there is a button in the top right corner that looks like a pointer finger clicking. If you click that, the interactives will be highlighted! For content assistance, please reach out to your instructor at nchri78@wgu.edu

One mole of any element has a mass equal to the average atomic mass on the periodic table. Depicted here is 1 mole of carbon atoms, which has a mass of 12 grams. This is because the atomic mass of carbon is 12 g/mol. One mole of carbon contains 6.02x1023 particles because the mole is a counting number.