# Classroom Resources: Reactions & Stoichiometry

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101 – 125 of 205 Classroom Resources

• Observations, Separating Mixtures, Solubility, Concentration, Precipitate, Identifying an Unknown, Molarity, Net Ionic Equation, Balancing Equations, Percent Yield, Stoichiometry, Limiting Reactant, Mole Concept, Dimensional Analysis, Graphing | High School

### Lab: White Lab

In this lab, students use molarity concepts to review limiting reactant concepts mathematically, conceptually, and graphically. They can then carry out a follow up investigation to identify an unknown using concepts learned in the first investigation.

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

### Activity: Limiting Reactants using Particulate Diagrams

In this activity, students will gain practice drawing particulate diagrams to demonstrate stoichiometry and limiting reactants.

• Concentration, Molarity, Stoichiometry, Limiting Reactant, Chemical Change, Calorimetry, Heat, Temperature, Exothermic & Endothermic, Scientific Method, Enthalpy, Experimental Design | High School

### Lab: Less Than Zero

In this lab, students will investigate the endothermic reaction between baking soda and HCl. Students will consider stoichiometric ratios, molar concentrations, reaction scale, and calorimetry. The lab starts with a scripted reaction that uses given molar ratios, a glass beaker, and 2-M HCl. They will witness a temperature drop of about 5 to 8 C. Students then adjust the experiment so they can achieve a temperature drop of more than 20 C.

• Gas Laws, Catalysts, Combustion, Stoichiometry, Limiting Reactant, Enthalpy, Activation Energy, Energy Diagrams, Experimental Design | High School

### Lab: Launching Rockets

In this lab, students create a stoichiometric mixture of hydrogen and oxygen gases to launch a soda bottle rocket.

• Concentration, Molarity, Balancing Equations, Stoichiometry, Mole Concept, Dimensional Analysis, Saturated/Unsaturated/Supersaturated | High School

### Lab: Kool-Aid

In this lab, students calculate grams of Kool-Aid powder required to make 3 different solutions of Kool-Aid (using the molar mass of sugar) with the following concentrations: 0.2 M, 0.5 M, and 1.0 M. Determine the concentration of properly prepared Kool-Aid through a taste test.

• Reaction Rate, Redox Reaction, Chemical Change, Exothermic & Endothermic | High School

### Demonstration: Potassium Permanganate Demo

In this demo, students witness two chemicals that take some time to react. The KMnO4 and glycerin come into contact and appear not to react, but then a flame results. This is an example of an exothermic redox reaction.

• Observations, Chemical Change, Conservation of Mass, Chemical Change, Heat, Temperature, 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, Concentration, Acid Base Reactions, Molarity, Balancing Equations, Stoichiometry, Dimensional Analysis, Measurements, Titrations, Indicators, Error Analysis | High School

### Lab: Vinegar Quality Control

In this lab, students will perform a titration of a vinegar sample to determine if it is it close to the concentration claimed on the bottle.

• Observations, Chemical Change, Balancing Equations, Classification of Reactions, Chemical Change | High School

### Lab: It's Time to React

In this lab, students will conduct four chemical reactions and analyze each for indicators of a chemical reaction. Based on their observations students will write a balanced chemical equation for each reaction as well as identify the reaction type for each reaction.

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

• Renewable Energy, Radiation, Pros Cons of Nuclear Power, Combustion, Acid Rain, Radiation | High School

### Activity: Town Meeting

In this activity, students will learn about acid rain, gas scrubbers, half-life, chain reactions, and other topics around electricity production through a debate on nuclear power.

• Solubility, Chemical Change, Precipitate, Net Ionic Equation, Balancing Equations, Chemical Change, Solubility Rules | High School

### Lab: Ions in Aqueous Solution Presentation

In this lab, students will mix ionic solutions to determine what combinations form precipitates.

• Observations, Chemical Change, Reaction Rate, Reaction Rate, Catalysts, Chemical Change | Elementary School

### Lab: To What DEGREE Does it Matter

In this lab the students will explore how factors such as temperature may influence chemical reactions. Students will use citric acid and sodium bicarbonate (Alka-Seltzer) and a catalyst (water) to induce a reaction at varying degrees. Observations will be made of the rate at which the reactions take place under these varying conditions. The students will make predictions of how the temperature of the water will affect the chemical reaction. They will use a stop watch to time the reaction between the Alka-Seltzer and the varying temperatures of water and graph their observations for analysis, they will compare data to deduce whether temperature has any influence during a chemical reaction.

• Acid Base Reactions, Balancing Equations, Titrations, Indicators, Strong vs Weak, Graphing, pH, Equivalence Point | High School

### Lab: Titration Curves

In this lab, students graphically observe a plot of micro acid/base titrations and determine the equivalence point of each plotted curve.

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

• Review, Model of the Atom, Isotopes, Balancing Equations, Atomic Mass, Subatomic Particles, Lewis Dot Diagrams, Electrons, Ions | Middle School, High School

### Activity: Tic-Tac-Toe Review

In this activity students collaborate to complete tic-tac-toe review questions to prepare for a test on the atomic structure unit. The idea behind the activity is to give students choice and you can read more about the inspiration for the activity in the May issue of Chemistry Solutions.

• Observations, Chemical Change, Interdisciplinary, Acid Base Reactions, Classification of Reactions, Chemical Change, Acid Rain, pH | High School

### Activity: Investigating Acid Rain

In this activity, students will investigate the chemistry of acid rain through web based research. Students will also have the opportunity to observe the reaction between a common acid and a material in a week long simulation and relate their findings to the effects of acid rain.

• Polymers, Molecular Structure, Polymers, Chemical Change, Molecular Structure , Chemical Bond, Monomer, 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.

• Observations, Chemical Change, Inferences, Stoichiometry, Conservation of Mass, Limiting Reactant, Chemical Change, Exothermic & Endothermic | High School

### Demonstration: Introducing Limiting Reactants

In this demonstration, the teacher will perform a series of reactions between acetic acid--vinegar-- and varying amounts of sodium bicarbonate --baking soda--in order to inflate several Ziploc bags. Students will observe the reactions and analyze the quantities of reactants used as well as the results in order to understand the concept of limiting reactants. Students will also determine if the reaction is an endothermic or exothermic process based on their observations.

• Observations, Density, Chemical Change, Physical Change, Balancing Equations, Chemical Change, Physical Change, Mixtures | High School

### Lab: The Lovely Lava Lamp

In this lab, students add food coloring to a mixture of oil and water and record their observations. They then add an Alka-Seltzer tablet, record their observations and answer a series of questions about the chemical and physical changes that took place.

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

### Demonstration: The Jumping Flame

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

• Gas Laws, Percent Yield, Stoichiometry, Dimensional Analysis, Measurements, Error Analysis | High School

### Lab: Ideal Gas Law

In this lab, students use the reaction of an antacid table with water to inflate a balloon. They then use the ideal gas law to determine the number of moles of gas produced by the reaction.

• Density, Temperature, Chemical Change, Gas Laws, Density, Pressure, Balancing Equations, Stoichiometry, Chemical Change, Dimensional Analysis, Kinetic Molecular Theory, Ideal Gas, Volume, Graphing | High School

### Lesson Plan: The Gas Laws Unit Plan

The AACT high school classroom resource library and multimedia collection has everything you need to put together a unit plan for your classroom: lessons, activities, labs, projects, videos, simulations, and animations. We constructed a unit plan using AACT resources that is designed to teach the Gas Laws to your students.

• Interdisciplinary, Concentration, Review, Identifying an Unknown, Culminating Project, Molarity, Balancing Equations, Stoichiometry, Classification of Reactions, Scientific Method, Experimental Design | High School

### Lab: The Culminating Unknown

In this lab, students identify an unknown from a list of 12 possible compounds by designing a procedure and using evidence to prove their claim. They must draw from knowledge gained throughout the year to properly develop a procedure to identify the unknown.