Classroom Resources: Reactions & Stoichiometry

1 – 25 of 47 Classroom Resources

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  Chemical Change, Error Analysis, History, Exothermic & Endothermic, Chemical Change | Middle School

  Lesson Plan: The Chemistry of Casts

  In this lesson, students will learn about the history of the chemistry involved in creating orthopedic casts. Students will then work in small groups to conduct a hands-on experiment in which they will determine the optimum plaster of Paris to water ratio for model casts.

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  Reaction Rate, Catalysts, Experimental Design, Chemical Change, Reaction Rate, Chemical Change | Middle School

  Lesson Plan: Investigating Fast and Slow Reaction Rates

  In this lesson, students will review the characteristics of chemical changes and then use a catalyst and an inhibitor to explore the reaction rate of the oxidation of iron.

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  Chemical Change, Volume | Elementary School, Middle School

  Lab: Air Bag Design Challenge

  In this lab, students will learn how chemistry is used in air bags. Students will model the inflation of an air bag by performing a series of reactions using baking soda and vinegar in a Ziploc bag. During this investigation, students will see that there is a relationship between the inflation size of the bag and the amount of reactants used. Finally, students will be challenged to design an air bag that can help an egg endure a crash test.

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  Classification of Reactions, Chemical Change, Balancing Equations, Acid Base Reactions, Combustion | Middle School, High School

  Animation: Classifying Chemical Reactions Animation

  This animation explores some of the ways to classify different types of chemical reactions. It covers synthesis (combination), decomposition, single replacement (single displacement), double replacement (double displacement), combustion, and acid-base neutralization reactions. This animation was featured in the November 2020 issue of Chemistry Solutions. **This video has no audio**

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  Classification of Reactions, Chemical Change, Balancing Equations, Acid Base Reactions | Middle School, High School

  Activity: Animation Activity: Classifying Chemical Reactions

  In this activity, students will view an animation that explores some of the ways to classify different types of chemical reactions. The animation covers synthesis (combination), decomposition, single replacement (single displacement), double replacement (double displacement), combustion, and acid-base neutralization reactions.

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  Exothermic & Endothermic, Temperature, Heat of Combustion, Chemical Change | Middle School

  Lesson Plan: Chemical Volcanoes - A Tale of Two Reactions

  In this lesson, students will use volcanoes as a vehicle to learn about the differences between endothermic and exothermic reactions by completing a hands-on activities and observing a teacher-led demonstration.

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  Chemical Change, Conservation of Mass, Balancing Equations | Middle School, High School

  Demonstration: Identifying Chemical Reactions

  In this demonstration, students observe a series of teacher led demonstrations to learn how to identify evidence that a chemical reaction has occurred, how to write a word equation to explain a chemical reaction, and how to convert a word equation to a balanced chemical equation.

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  Chemical Change, Chemical Change, Acid Base Reactions, Observations | Middle School, High School

  Lab: How do Sinkholes Form?

  In this lab students will learn how acidic groundwater reacts with limestone, causing it to erode. Sinkholes form when eroded limestone underneath the surface of the earth can no longer support the ground above it. Students will test how acid reacts with a variety of rocks and determine which rocks would be best to build a city on top of in order to reduce the chance of sinkholes forming.

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  Chemical Change, Chemical Change, Observations | Elementary School, Middle School

  Lab: It's Alive

  In this lab, students will practice making and recording observations, analyzing data, and identifying chemical change. They will transfer dirt, germs, and bacteria from their hands onto a piece of white bread and observe the changes that occur during the following days. Students will analyze the results, make comparisons between clean and dirty samples of bread and learn about the importance of hand-cleaning.

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  Reaction Rate, Reaction Rate, Chemical Change | Middle School, High School

  Demonstration: Comparing Rates of Reaction

  In this demonstration, students observe the effect of temperature, concentration, and particle size on the rate of a chemical reaction.

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  Chemical Change, Exothermic & Endothermic | Elementary School, Middle School

  Demonstration: Giant Toothpaste

  In this demonstration, students will identify factors that indicate a chemical change has occurred while observing the production of giant toothpaste. This reaction uses simpler materials than those that are often used in the typical high school version of the Elephant’s toothpaste demonstration.

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  Classification of Reactions, Chemical Change, Catalysts, Observations | Middle School, High School

  Demonstration: Catalyst in Motion

  This demonstration allows students to visualize how a catalyst can impact a chemical reaction. Students will also identify the products of a decomposition reaction, as well as determine if the reaction was endothermic or exothermic based on their observations.

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  Concentration, Solute & Solvent, Chemical Change | Elementary School, Middle School

  Demonstration: Soft Eggs

  In this demonstration, students will first observe a reaction between vinegar (acetic acid) and an egg shell (calcium carbonate) to produce a naked egg. Using these eggs, student will analyze how certain substances can move through a membrane and also determine if the membrane is affected.

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  Chemical Change, Chemical Change, Physical Change, Physical Properties | Middle School

  Lab: Little Miss Muffet Investigation

  In this lab, students will work in cooperative groups to conduct a chemical reaction by mixing vinegar with milk. This reaction will cause the curds to precipitate and separate from the liquid whey. The lesson can be extended by experimenting with different types of milk or by using different acids.

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  Chemical Change, Molecular Structure | Middle School

  Lab: Detecting Fats and Starches in Food

  In this lab, students will identify fats and starches in a variety of foods. Since we eat many complex foods which contain mixtures of carbohydrates (e.g. sugars and starches), fats, and proteins, conducting food tests will enable the students to determine the make up of a certain food.

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

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  Chemical Change, Physical Change, Chemical Change, Scientific Method, Melting Point, Phase Changes | Middle School

  Lab: S'more Change Please

  In this lab, students will be able to demonstrate the difference between a physical and chemical change by making ooey, gooey, yet yummy S’mores!

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  Chemical Change, Physical Change, Chemical Change | Middle School, High School, Elementary School

  Lab: Chemical and Physical Changes

  In this lab, students will observe and analyze a number of examples in order to determine if a chemical or physical change occurred.

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  Conservation of Mass, Chemical Change, Interdisciplinary, Culminating Project, Phase Changes, Chemical Change | Middle School, High 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.

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  Exothermic & Endothermic, Classification of Reactions, Energy Diagrams, Bond Energy, Activation Energy, Temperature, Chemical Change | Middle School, High School

  Activity: Simulation Activity: Energy Changes in Chemical Reactions

  In this simulation, students will evaluate the energy changes in an endothermic and an exothermic chemical reaction. Through the use of this simulation students will have the opportunity to compare how energy is absorbed and released in each reaction. Additionally, students will make a connection between the standard energy diagrams associated with each reaction type.

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  Conservation of Mass, Exothermic & Endothermic, Chemical Change, Heat, Temperature, Observations, Chemical Change | High School, Middle 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.

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  Polymers, Polymers, Chemical Change, Chemical Bond | Middle School, High School

  Demonstration: Turn Milk into Plastic

  In this demonstration, students will observe the process of making a polymer, casein plastic, from the casein protein found in milk.

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  Density, Density, Chemical Change, Observations, Chemical Change, Combustion | Elementary School, Middle School

  Demonstration: Investigating Gas Density

  In this demonstration, students will observe a reaction between baking soda and vinegar in the presence of a burning candle. The initial environment has plenty of oxygen present in order to sustain the candle’s flame; however the reaction will produce carbon dioxide which will cause the lit candle to extinguish. Students will analyze the outcome and compare the presence of the gases in the container and make determinations about the densities of each.

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  Polymers, Molecular Structure, Molecular Structure , Monomer, Chemical Bond, Chemical Change, Polymers, Monomer | Middle School

  Lesson Plan: The Power of Polymers

  In this lesson students will use lab activities and discussion to explore polymers and their use in 3D printing, with an emphasis on the benefits of 3D printing in automotive manufacturing.

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  Chemical Change, Phase Changes, Combustion, Observations | Elementary School, Middle School

  Demonstration: The Jumping Flame

  In this demonstration, students will observe that the vapor of an extinguished candle flame is ignitable.