1 – 25 of 55 Classroom Resources

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  Concentration, Solute & Solvent | High School

  Activity: Why Does Concentration Matter? Mark as Favorite (5 Favorites)

  In this activity, students will analyze a drinking water quality report from Washington, D.C. or from their city. Students will apply their knowledge of solutions and concentration in order to answer a series of questions using real-world data.

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  Concentration, Titrations, Indicators, Equivalence Point, Chemical Change, Accuracy, Error Analysis, Chemical Change | Middle School, High School

  Lesson Plan: Comparison of Vitamin C in Juice Drinks Mark as Favorite (16 Favorites)

  In this lesson, students will use a color-changing indicator called indophenol and a simplified titration method to determine if vitamin C is present in a variety of store-bought juices. The indicator solution will turn from dark blue to colorless once all the indophenol has reacted with vitamin C in the juices. Students will count how many drops of juice it takes to produce this color change in a 5-mL sample of indicator solution. The greater number of drops it takes to cause the color change, the less vitamin C is present in each drop. They will use their data to compare the relative amounts of vitamin C in the juices to a solution prepared from a vitamin C tablet.

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  Titrations, Indicators, Accuracy, Dimensional Analysis, Error Analysis, Measurements, Significant Figures, Concentration, Redox Reaction, Reduction, Oxidation | High School

  Lesson Plan: Vitamin C Quality Control Mark as Favorite (14 Favorites)

  In this lesson, students will learn about a career in the skilled technical workforce, develop skills utilized in a quality control lab, and obtain data that may not have a clear “right answer.” For example, though many over-the-counter medications and vitamins state the amount of active ingredient, any individual tablet may have between 97 to 103% of the stated label claim. In addition, any products past the expiry date may have less due to potential decomposition. Students practice scientific communication by reporting their findings in a professional manner.

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  Concentration, Solubility, Molarity, Chemistry Basics, Graphing | High School

  Activity: Concentration and Solubility Mark as Favorite (28 Favorites)

  In this activity, students will use news articles and EPA publications to compare Federal drinking water regulations to the concentrations found in Flint, Michigan. Students are introduced to the unit parts per billion (ppb) and compare it both conceptually and mathematically to molarity. As a group, students use data to compare the solubility of various lead salts and perform solubility calculations.

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  Solubility, Solubility Rules, Concentration, Molarity, Reactions & Stoichiometry, Stoichiometry | High School

  Lab: The Gravimetric Analysis of Lead in Contaminated Water Mark as Favorite (39 Favorites)

  In this lab, students will perform a gravimetric analysis of a simulated water sample contaminated with “lead”. Using their knowledge of solubility and chemical reactions they will precipitate the “lead” from the water sample. Then from the data collected, they will calculate the concentration of “lead” in their samples and compare that value to those found in water samples from the Flint, Michigan water crisis.

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  Concentration, Precipitate, Molarity, Molality, Conductivity, Colligative Properties, Boiling Point Elevation, Freezing Point Depression, Distillation, Culminating Project, Graphing, Accuracy, Error Analysis, Interdisciplinary, Mixtures, pH, Buffers, Boiling Point, Freezing Point, Phase Changes | High School

  Lesson Plan: Investigating Sea Water Mark as Favorite (27 Favorites)

  In this lesson, students will consider their water footprint and means to obtain fresh water from seawater using a solar still. To understand the differences between fresh water and seawater, students will determine the composition of artificial seawater by using qualitative analysis to test for different ions in solution and calculate the molarity of different salts used in the recipe. Students will observe the effects of solutes in aqueous solutions by measuring conductivity and the freezing and boiling points of seawater and deionized water and determine total dissolved solids. In addition, students explore the buffering ability of seawater and the effect of carbon dioxide on its pH.

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  Colligative Properties, Boiling Point Elevation, Freezing Point Depression, Concentration, Solute & Solvent, Boiling Point, Freezing Point, Phase Changes, Molecular Motion, Graphing, Physical Properties, Heat, Temperature | Middle School, High School

  Activity: Simulation Activity: The Effect of Solutes on Boiling and Freezing Point Mark as Favorite (43 Favorites)

  In this activity, students will use a colligative properties simulation to investigate the effects of different solutes, and different amounts of those solutes, on the boiling point and freezing point of a solution. Students will see particle-level animations of boiling and freezing with different types and amounts of solutes, as well as graphical representations of the results of each trial.

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  Colligative Properties, Boiling Point Elevation, Freezing Point Depression, Concentration, Solute & Solvent, Boiling Point, Freezing Point, Phase Changes, Molecular Motion, Graphing, Physical Properties, Heat, Temperature | High School

  Simulation: Colligative Properties Mark as Favorite (34 Favorites)

  In this simulation, students will investigate the effects of different solutes, and different amounts of those solutes, on the boiling point and freezing point of a solution. Students will see particle-level animations of boiling and freezing with different types and amounts of solutes, as well as graphical representations of the results of each trial.

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  Interdisciplinary, History, Solubility, Concentration | High School

  Lesson Plan: Legacy of Rachel Carson’s Silent Spring Mark as Favorite (17 Favorites)

  In this lesson, students will read an article to learn about the impact Rachel Carson’s book Silent Spring has had. Arguably, the U.S. EPA was formed as a result, and a Nobel Prize-worthy discovery was banned after the book was published. There are a series of activities to help promote literacy in the science classroom related to the reading. This lesson could be easily used as plans for a substitute teacher since most of the activities are self-guided.

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  Reaction Rate, Concentration, Reaction Rate | High School

  Lab: How Fast Can We Remove Tough Stains? Mark as Favorite (55 Favorites)

  In this lab, students explore how temperature and concentration can affect reaction rate. Using various mixtures of OxiClean solutions, blue food coloring, and water students conduct several tests and draw conclusions based on their results.

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  Reduction, Redox Reaction, Reduction Potentials, Galvanic Cells, Oxidation, Half Reactions, Cathode, Anode, Electron Transfer, Electrons, Concentration, Molarity, Net Ionic Equation, Nernst Equation | High School

  Simulation: Galvanic/Voltaic Cells 2 Mark as Favorite (42 Favorites)

  In this simulation, students can create a variety of standard and non-standard condition galvanic/voltaic cells. Students will choose the metal and solution for each half cell, as well as the concentration of those solutions. They can build concentration cells and other non-standard cells, record the cell potential from the voltmeter, and observe the corresponding oxidation and reduction half reactions.

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  Galvanic Cells, Reduction Potentials, Redox Reaction, Half Reactions, Electrons, Electron Transfer, Anode, Cathode, Oxidation, Reduction, Concentration, Net Ionic Equation, Molarity, Nernst Equation | High School

  Activity: Simulation Activity: Non-Standard Galvanic Cells Mark as Favorite (11 Favorites)

  In this activity, students will use a simulation to create a variety of non-standard condition galvanic/voltaic cells. This simulation allows students to choose the metal and solution for each half cell, as well as the concentration of those solutions. Students will build concentration cells and other non-standard cells and record the cell potential from the voltmeter. They will compare the results of different data sets, write net ionic equations, and describe electron flow through a galvanic/voltaic cell from anode to cathode as well as the direction of migration of ions, anions towards the anode and cations towards the cathode.

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  Concentration, Percent Composition | Middle School, High School

  Lab: Homemade Hydrometers Mark as Favorite (5 Favorites)

  In this lesson, students will engineer simple hydrometers from straws and clay to learn about standard solutions, calibration, and instrument drift. They will use their hydrometers to test the salinity of samples of natural water.

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  Solubility, Conductivity, Concentration, Equilibrium Constants, Stoichiometry | High School

  Lab: Experimental Determination of the Solubility Product Constant for Calcium Hydroxide Mark as Favorite (3 Favorites)

  In this lab, students will predict and measure the relationship between the conductivity of a solution of calcium hydroxide and the mass of substance added to it. From the relationship, students will determine solubility and Ksp of calcium hydroxide. Ksp will be calculated using the molar concentration of ions in the solution and the equilibrium expression for the dissociation of calcium hydroxide.

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  Significant Figures, Measurements, Beer's Law, Concentration, Molarity | High School

  Lab: Investigating Shades of Blue Mark as Favorite (12 Favorites)

  In this lab investigation, students will create a copper(II) nitrate solution. Each group will be given a different measurement device in order to see how the accuracy of the preparation of the solution is affected by the limitations of the measurement device. The goal is for students to have a true understanding of why significant figures are important.

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  Review, Culminating Project, Mixtures, Separating Mixtures, Beer's Law, Concentration, Redox Reaction, Half Reactions, pH, Titrations, Buffers, Indicators, Ionic Bonding, Covalent Bonding, Alloys, Percent Composition, Le Châtelier's Principle, Enthalpy, Calorimetry, Conductivity | High School

  Lesson Plan: AP Chemistry Experimental Evidence Review Mark as Favorite (44 Favorites)

  In this lesson, students will evaluate data from 16 simulated lab experiments that were designed to mirror the Recommended Labs from the College Board. Corresponding lab experiments and demonstration options have also been included for teacher reference.

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  Concentration, Graphing, Electromagnetic Spectrum | High School

  Lesson Plan: Determining the Time of Death Mark as Favorite (41 Favorites)

  In this lesson, students will perform a flame test on a sample of vitreous humor (liquid found in the eyeball) in a forensic investigation. They will determine which element from the sample is used to determine the time of death. Then they will engineer a simple spectrophotometer to quantify that element. Evaluating a fake sample of vitreous humor in their spectrophotometer will help them determine the time of death for a hypothetical cadaver.

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  Concentration, Solute & Solvent | Middle School, High School

  Lesson Plan: Diffusion and Osmosis Mark as Favorite (2 Favorites)

  In this lesson, students will build upon their understanding of solutions and concentration. They will observe the diffusion of food coloring dye in water and then perform an experiment focused on how solutions of different concentrations will affect the movement of water across a semi-permeable membrane.

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  Molarity, Concentration, Solute & Solvent | High School

  Simulation: Preparing Solutions Mark as Favorite (83 Favorites)

  In this simulation, students will complete a calculation in order to determine either the molarity of solution, volume of solution, or mass of solute needed. Additionally the associated particle diagram for the solution will be displayed to help students better visualize the solution at the particulate level. Finally, students will gain familiarity with the proper lab techniques for preparing a solution as they are lead through a step-by-step animated process demonstrating this procedure.

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  Molarity, Concentration, Solute & Solvent | High School

  Activity: Simulation Activity: Preparing Solutions Mark as Favorite (34 Favorites)

  In this simulation, students will complete a calculation in order to determine the value of an unknown variable related to a described solution and then they will observe an animation of the solution being prepared. The calculation will require the student to determine either the molarity of solution, volume of solution, or mass of solute needed. Additionally the associated particle diagram for the solution will be displayed to help students better visualize the solution at the particulate level. Finally, students will gain familiarity with the proper lab techniques for preparing a solution as they are lead through a step-by-step animated process demonstrating this procedure. The simulation is designed as a five question quiz for students to use multiple times.

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  Balancing Equations, Classification of Reactions, Chemical Change, Identifying an Unknown, Molarity, Concentration | High School

  Lab: An Environmental Impact Study Mark as Favorite (82 Favorites)

  In this lab, students will test a water sample which comes from a local zoo, where, it is reported that many bird eggs are not hatching. Students will test the water for the presence of multiple ions. Once the type of ion in the water is determined, students will write balanced equations to illustrate their findings. Students will also conduct a serial dilution to determine the concentration, or molarity, of the ion in the water sample. This molarity will be compared to known values to determine if the materials in the water are at an unhealthy level.

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  Density, Concentration, Solute & Solvent | High School

  Lab: Test Tube Challenge Mark as Favorite (47 Favorites)

  In this lab, students will be challenged to create a density column, consisting of three distinct layers of sugar-water solution. This is an inquiry lab, where the students must apply their understanding of density and concentration in order to devise a successful plan for creating the column correctly.

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  Concentration, Solute & Solvent, Solubility | High School

  Demonstration: Saturated Solutions: An Engagement Activity Mark as Favorite (21 Favorites)

  In this demonstration, students will observe salt dissolving in water and participate in a think-pair-share activity using teacher-led questions. It is intended to be an introduction to solutions, particularly saturation.

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  Acid & Base Theories, Strong vs Weak, Indicators, Titrations, Buffers, Concentration, Molarity, Net Ionic Equation | High School

  Lesson Plan: Acids and Bases Unit Plan Mark as Favorite (60 Favorites)

  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 topic of acids and bases to your students.

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  Solubility, Solute & Solvent, Concentration, Pressure, Temperature | High School

  Demonstration: Exploring Gas Solubility Mark as Favorite (14 Favorites)

  In this demonstration, students will explore how changes in pressure and temperature affect the solubility of a gas in an aqueous solution. In addition, students will have the opportunity in a post-demonstration reflection activity to practice using data (in this case their demonstration observations) to make evidence based claims.