Classroom Resources: Solutions


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76 – 100 of 125 Classroom Resources

  • Acid Base Reactions, Molarity, Net Ionic Equation, Mole Concept, Dimensional Analysis, Measurements, Heat of Neutralization, Calorimetry, Specific Heat, Temperature, Exothermic & Endothermic, Bond Energy | High School

    Lab: Heat of Neutralization

    In this lab, students carry out an acid base reaction to calculate the heat of neutralization.

  • Observations, Physical Change, Solute & Solvent, Intermolecular Forces, Heat, Temperature, Exothermic & Endothermic, Saturated/Unsaturated/Supersaturated | High School, Middle School

    Lesson Plan: Particle Modeling of Hand Warmers

    In this lesson, students will create a particulate model of matter that explains energy changes and transfer during a physical process, such as the crystallization of a solid from a supersaturated solution.

  • Identifying an Unknown, Net Ionic Equation, Stoichiometry, Percent Composition, Molar Mass, Error Analysis | High School

    Lab: Analysis of Carbonate Compounds

    In this lab, students identify three unknown substances by measuring the amount of product (CO2) produced by a reaction with hydrochloric acid.

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

    Demonstration: First Day Review

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

  • 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.

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

    Lab: Finding CO<sub>2</sub> Mass in your Breath

    In this lab, students will measure how much carbon dioxide they exhale by reacting their exhaled breath with lime water (calcium hydroxide).

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

    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.

  • Precipitate, Conductivity, Classification of Reactions, Chemical Change | High School

    Demonstration: Sterno

    In this demonstration, students will observe a decomposition reaction that triggers a precipitate reaction that prevents a solution from conducting electricity.

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

    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.

  • 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.

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

    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.

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

    Lab: Changing Water's Boiling Point

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

  • 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.

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

    Lab: Molarity of a Solution

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

  • 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.

  • Covalent Bonding, Ionic Bonding, Conductivity | High School

    Lab: Strong and Weak Electrolytes

    In this lab, students will analyze the conductivity of several common household solutions using a light emitting conductivity diode tester to determine if the solution is a strong or weak electrolyte. Students will interpret the brightness of the lightbulb to determine the strength of the electrolyte. Students will also have an opportunity to consider the connection between conductivity and bond type during this lab.

  • Solubility, Covalent Bonding, Precipitate, Ionic Bonding, Molecular Structure, Solute & Solvent, Saturated/Unsaturated/Supersaturated | High School, Middle School

    Lab: Benzoic Acid Blizzard in a Bottle

    In this lab, students create a snow globe by taking advantage of benzoic acid’s solubility properties in hot water.

  • Solubility, Precipitate, Solute & Solvent, Saturated/Unsaturated/Supersaturated | High School, Elementary School, Middle School

    Lab: Winter Crystals

    In this lab, students will create a supersaturated solution by dissolving borax in boiling water. They will create a snowflake using pipe cleaner to suspend in the solution, which will serve as a nucleation site for crystallization as the solution cools and remains undistributed overnight. This lab gives students an opportunity to experience the exciting crystallization process and become more familiar with an engaging chemistry spectacle!

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

    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.

  • Observations, Physical Properties, Mixtures, Solubility, Intermolecular Forces, Polarity, Identifying an Unknown, Intermolecular Forces, Chemical Properties, Intramolecular Forces, Mixtures | High School

    Lab: Solubility & Compound Type

    In this lesson, students determine whether unknown substances are polar, nonpolar, or ionic by testing their solubilities.

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

    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.

  • Density, Physical Properties, Mixtures, Solubility, Freezing Point, Polarity, Phase Changes, Intermolecular Forces, Colligative Properties, Intermolecular Forces, Freezing Point Depression, Mixtures | High School

    Lesson Plan: Fuel Line Antifreeze

    In this lesson students will explore the role of a gasoline additive, fuel line antifreeze (generally methanol or 2‑propanol), in reducing the potential of water to block fuel lines in freezing weather. Students will prepare test tube models of water-contaminated fuel tanks and explore the effect of adding different types of fuel line antifreeze. This lesson can be used to bolster concepts about miscibility, density, intermolecular forces, phase changes (freezing), and colligative properties (freezing point depression).

  • Solute & Solvent, Intermolecular Forces, Scientific Method | High School

    Lab: Exploring Intermolecular Forces

    In this lab, students will investigate the idea that “like dissolves like” by discovering which liquids are best suited for dissolving various substances. This can serve as a great inquiry lab prior to teaching intermolecular forces.

  • Mixtures, Solubility, Reaction Rate, Saturated/Unsaturated/Supersaturated | High School

    Lab: Rate of Solution

    In this lab, students observe how particle size, solvent temperature, and agitation affect rate of solution.

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

    Lab: Starch-Iodine Clock Reaction

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

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