Classroom Resources: Reactions & Stoichiometry


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1 – 12 of 12 Classroom Resources

  • Balancing Equations, Conservation of Mass | High School, Middle School

    Activity: Balancing Equations with Note Cards

    In this activity, students will balance equations and get immediate feedback on whether they are accurate or not while trying to solve a challenge. This activity works best as a review activity after balancing and the law of conservation of matter has been taught.

  • Conservation of Mass, Measurements | High School, Middle School

    Lab: Mass of a Gas

    In this lab, students will perform a simple chemical reaction in a closed system to produce a small amount of gas. They will collect mass measurements for the reactants and the products in order to demonstrate the conservation of mass during the reaction. They will also release the produced gas from the closed system in order to verify that gasses have mass.

  • Balancing Equations, Conservation of Mass | High School, Middle School

    Activity: Balancing Legos

    In this activity students use Legos to model the reactants and products in a chemical reaction. They use these “atoms” and “molecules” to balance the chemical reaction in order to demonstrate the law of conservation of matter.

  • Molecular Formula, Balancing Equations, Conservation of Mass | High School, Middle School

    Lesson Plan: Counting Atoms & Balancing Equations

    In this lesson, students will learn how to count atoms and how to balance chemical equations using videos, simulations and games.

  • Balancing Equations, Conservation of Mass, Photosynthesis | Middle School

    Activity: Achieving a Photosynthetic Balance

    In this activity, students will use candies to model the rearrangement of atoms from reactant to products during photosynthesis.

  • Chemical Change, Physical Change, Conservation of Mass, Chemical Change | High School, Middle School

    Lab: Chemistry in a Bag

    In this lab, students will observe and identify chemical and physical changes contained inside a plastic bag. Students will also use this lab to understand the Law of Conservation of Mass.

  • Conservation of Mass, Chemical Change | High School, Middle School

    Project: Law of Conservation of Mass Comic Strip

    In this project, students will work in groups to create a comic strip that illustrates understanding of the law of conservation of mass.

  • Conservation of Mass, Exothermic & Endothermic | Middle School, High School

    Lab: Kitchen Reaction

    In this lab students will observe an endothermic chemical reaction involving baking soda (sodium bicarbonate) and vinegar (acetic acid). Students will investigate the signs a chemical reaction has occurred (gas production, change in temperature). Students will perform the lab in an open system so they can see the change of mass due to gas production. This lab is a lead into the topic of conservation of mass. After the lab is completed, the teacher should do a demonstration of the exothermic reaction Hydrogen peroxide and potassium iodide.

  • Introduction, Conservation of Mass, Balancing Equations, Conservation of Mass, Limiting Reactant | High School, Middle School

    Activity: Kinesthetic Reactions

    In this lesson students, through their physical movement, will model the law of conservation of mass during a chemical reaction. Students will also explore the concepts of limiting and excess reactants as well as balancing a chemical equation. Through this activity they also develop a means of representing particles at the molecular level.

  • Chemical Change, Interdisciplinary, Molecular Formula, Conservation of Mass, Balancing Equations, Conservation of Mass, Reversible Reactions, Chemical Change, Photosynthesis | Middle School

    Lesson Plan: The Building Blocks of Photosynthesis

    In this lesson, students will use colored blocks to represent the elements in photosynthesis and illustrate how they are broken down and reassembled to create glucose.

  • Renewable Energy, Conservation of Mass | High School, Middle School

    Lab: Power That Stinks

    In this lab, students will experiment with creating and capturing biogas, and have an opportunity to look at how energy is created from waste. They will explore the differences between non-renewable and renewable energy sources.

  • Balancing Equations, Conservation of Mass | High School, Middle School

    Simulation: Balancing Chemical Equations

    In this activity, students will learn how to count atoms and how to balance chemical equations using a simulation and games from PhET Interactive Simulations.

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Subtopic: Conservation of Mass

Grade Level: Middle School

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