# Classroom Resources: Solutions

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26 – 46 of 46 Classroom Resources

• Concentration, Molarity, Mole Concept | High School

### Demonstration: What Is a 1 Molar Solution?

In this demonstration, students will determine the molarity of several different solutions demonstrated by the teacher.

• 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

### Access is an AACT member benefit. 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.

• Concentration, Molarity, Stoichiometry, Limiting Reactant, Chemical Change, Exothermic & Endothermic, Calorimetry, Heat, Temperature, 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.

• Concentration, Molarity, Titrations, Indicators, Acid Base Reactions, Equivalence Point | High School

### Access is an AACT member benefit. Lab: Lethal Dose

In this lab, students will perform several titrations to calculate the concentration of potentially “lethal” medicycloprophic solutions.

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

### Access is an AACT member benefit. 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.

• Concentration, Chemical Change, Molarity, Balancing Equations, Stoichiometry, Titrations, Indicators, Dimensional Analysis, Measurements, Acid Base Reactions, Error Analysis | High School

### Access is an AACT member benefit. 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.

• Solute & Solvent, Concentration, Colligative Properties, Calorimetry, Heat, Specific Heat, Temperature, Freezing Point Depression, Error Analysis | High School

### Access is an AACT member benefit. Lesson Plan: The Hot and Cold of it All

In this lesson students will analyze the effectiveness of different brands of antifreeze/coolants and their ability to protect an engine in cold climates. Students will conduct a lab investigation to examine the freezing point depression in samples that have been diluted with distilled water. Students will also determine the specific heat capacities of antifreeze/coolant products as compared to pure water and explain how it relates to thermal energy transfer in the internal combustion engine.

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

### Access is an AACT member benefit. 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.

• Gas Laws, Concentration, Molarity, Stoichiometry, Electrolysis, Mole Concept, Dimensional Analysis, Ideal Gas, Electrons | High School

### Access is an AACT member benefit. Lesson Plan: Stoichiometry Set-up Method

In this lesson, students will learn how to follow a process of visual cues in combination with a step-by-step problem solving method for different types of stoichiometric problems. This method can be particularly beneficial for students who struggle with completing multi-step calculations.

• Concentration, Reaction Rate, Temperature, Graphing | Middle School, High School

### Access is an AACT member benefit. Lab: Starch-Iodine Clock Reaction

In this lab, students perform an iodine clock reaction to determine how concentration and temperature effect the reaction rate.

• Solute & Solvent, Concentration, Molarity, Stoichiometry, Mole Concept, Dimensional Analysis, Tyndall Effect | High School

### Access is an AACT member benefit. Activity: Solubility & Solutions

In this inquiry activity, students investigate types of solutions, identifying the solute and solvent, and classifying each solution. They them solve stoichiometry problems involving solutions of different concentrations.

• Concentration, Chemical Change, Molarity, Chemical Change, Indicators, Acid Rain, Acid Base Reactions, Equivalence Point, pH | High School

### Lab: Seeing the Effects of Acid Rain

In this lesson, students will prepare an environment and make acid rain to see how the acid rain effects the items in the environment.

• Concentration, Molarity, Percent Yield, Stoichiometry, Classification of Reactions, Limiting Reactant, Chemical Change, Mole Concept, Dimensional Analysis | High School

### Access is an AACT member benefit. Demonstration: First Day Review

In this demonstration, students see evidence of a chemical reaction.

• Concentration, Precipitate, Net Ionic Equation, Balancing Equations, Stoichiometry, Limiting Reactant, Mole Concept, Dimensional Analysis | High School

### Access is an AACT member benefit. Lab: Finding CO2 Mass in your Breath

In this lab, students will measure how much carbon dioxide they exhale by reacting their exhaled breath with limewater (calcium hydroxide solution). Students will practice writing balanced equations and completing mass-to-mass stoichiometric calculations.

• Physical Properties, Concentration, Colligative Properties, Boiling Point, Accuracy, Graphing, Error Analysis, Boiling Point Elevation, Molality | High School

### Access is an AACT member benefit. Lab: Changing Water's Boiling Point

Download this lab in which students will explore colligative properties in a quantitative approach.

• Concentration, Interdisciplinary, Molarity, Titrations, Indicators, Acid Base Reactions | High School

### Access is an AACT member benefit. Lab: Calculating Acid in Lemon-Lime Soda

In this lab, students will investigate the molarity of citric acid in a clear, lemon-lime flavored soft drink through titrations with 0.10M NaOH and an indicator.

• Solubility, Concentration, Titrations, Indicators, Acid Base Reactions, pH | High School

### Access is an AACT member benefit. Lab: Alka-Seltzer & Gas Solubility

In this lab, students will use a reaction to investigate temperature and the solubility of carbon dioxide and will use a neutralization reaction and an indicator to verify the amount of carbon dioxide produced at each temperature.

• Concentration, Molarity, Stoichiometry, Limiting Reactant, Indicators, Mole Concept, Dimensional Analysis, Measurements, Acid Base Reactions, pH | High School

### Access is an AACT member benefit. Lab: Acid/Base Stoichiometry

In this lab, students experience a limiting reactant and can physically see the difference in amounts of product generated. They also see which reactant is in excess.

• Concentration, Chemical Change, Chemical Change, Molarity, Balancing Equations, Stoichiometry, Limiting Reactant, Chemical Change, Titrations, Indicators, Measurements, Acid Base Reactions, Graphing, Error Analysis, Error Analysis, Equivalence Point | High School

### Access is an AACT member benefit. Lab: Acid-Base Mole Ratio

In this lab, students study several concepts, including acid-base reactions, limiting reactants, and stoichiometry, by observing the contained reaction of acetic acid (diluted vinegar) with sodium hydrogen carbonate (baking soda) in an unconventional, cost effective titration.

• Concentration, Molarity, Titrations, Indicators, Strong vs Weak, Measurements, Acid Base Reactions, Equivalence Point, pH | High School

### Access is an AACT member benefit. Lab: Acid Base Reactions

In this lab, students will witness a reaction between an acid and base. One will be strong, and the other may be weak or strong--it's up to them to determine.

• Mixtures, Solute & Solvent, Concentration, Molarity, Mole Concept, Dimensional Analysis, Measurements | High School

### Access is an AACT member benefit. Lab: Molarity of a Solution

In this lab, students calculate concentrations of and perform dilutions of Kool-Aid and juice solutions.

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Subtopics: Concentration