Classroom Resources: Solutions
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Reaction Rate, Concentration, Reaction Rate  High School
Lab: How Fast Can We Remove Tough Stains?
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.

Concentration, Molarity, Net Ionic Equation, Reduction, Redox Reaction, Reduction Potentials, Galvanic Cells, Oxidation, Half Reactions, Cathode, Anode, Electron Transfer, Electrons, Nernst Equation  High School
Simulation: Galvanic/Voltaic Cells 2
In this simulation, students can create a variety of standard and nonstandard 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 nonstandard cells, record the cell potential from the voltmeter, and observe the corresponding oxidation and reduction half reactions.

Concentration, Percent Composition  Middle School, High School
Lab: Homemade Hydrometers
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.

Concentration, Molarity, Net Ionic Equation, Reduction, Redox Reaction, Reduction Potentials, Galvanic Cells, Oxidation, Half Reactions, Cathode, Anode, Electron Transfer, Electrons, Nernst Equation  High School
Activity: NonStandard Galvanic Cells
In this activity, students will use a simulation to create a variety of nonstandard 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 nonstandard 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.

Solubility, Concentration, Conductivity, Stoichiometry, Equilibrium Constants  High School
Lab: Experimental Determination of the Solubility Product Constant for Calcium Hydroxide
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.

Concentration, Molarity, Measurements, Significant Figures, Beer's Law  High School
Lab: Investigating Shades of Blue
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.

Separating Mixtures, Concentration, Review, Culminating Project, Covalent Bonding, Ionic Bonding, Percent Composition, Le Châtelier's Principle, Calorimetry, Titrations, Indicators, Redox Reaction, Half Reactions, Beer's Law, Buffers, Enthalpy, Conductivity, Mixtures, Alloys, pH  High School
Lesson Plan: AP Chemistry Experimental Evidence Review
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.

Concentration, Electromagnetic Spectrum, Graphing  High School
Lesson Plan: Determining the Time of Death
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.

Solute & Solvent, Concentration  Middle School, High School
Lesson Plan: Diffusion and Osmosis
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 semipermeable membrane.

Solute & Solvent, Concentration, Molarity  High School
Simulation: Preparing Solutions
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 stepbystep animated process demonstrating this procedure. 
Solute & Solvent, Concentration, Molarity  High School
Activity: Simulation Activity: Preparing Solutions
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 stepbystep animated process demonstrating this procedure. The simulation is designed as a five question quiz for students to use multiple times.

Concentration, Identifying an Unknown, Molarity, Balancing Equations, Classification of Reactions, Chemical Change  High School
Lab: An Environmental Impact Study
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.

Density, Solute & Solvent, Concentration  High School
Lab: Test Tube Challenge
In this lab, students will be challenged to create a density column, consisting of three distinct layers of sugarwater 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.

Solubility, Solute & Solvent, Concentration  High School
Demonstration: Saturated Solutions: An Engagement Activity
In this demonstration, students will observe salt dissolving in water and participate in a thinkpairshare activity using teacherled questions. It is intended to be an introduction to solutions, particularly saturation.

Concentration, Molarity, Net Ionic Equation, Titrations, Indicators, Strong vs Weak, Acid & Base Theories, Buffers  High School
Lesson Plan: Acids and Bases 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 topic of acids and bases to your students.

Solubility, Pressure, Solute & Solvent, Concentration, Temperature  High School
Demonstration: Exploring Gas Solubility
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 postdemonstration reflection activity to practice using data (in this case their demonstration observations) to make evidence based claims.

Concentration, Acid & Base Theories  High School
Lesson Plan: Calculating pH, A Look at Logarithms
In this lesson, students will be introduced to a base10 logarithmic scale and use it to calculate pH from hydrogen ion concentration. Often students are able to calculate pH by pushing the correct buttons on their calculators, but they don’t understand what the values mean. This lesson attempts to bridge that gap using a guided inquiry model.

Concentration, Molarity  High School
Activity: Particle Level Molarity
In this activity, students are introduced to molarity at the particle level. Students will activate their prior knowledge by demonstrating their understanding of concentration by preparing several KoolAid drinks, and then applying that information at the particle level to various models.

Concentration, Electromagnetic Spectrum, Beer's Law  High School
Lesson Plan: Using Color to Identify an Unknown
In this lesson students will utilize spectrophotometry to identify the wavelength of maximum absorbance for a food dye. They will also generate a Beer's Law Standard Curve, and utilize their skills to identify the different dyes and their concentrations in an unknown mixture. The lesson culminates with an extension to utilizing a similar method in color matching paint.

Physical Properties, Concentration, Beer's Law  High School
Lesson Plan: Introduction to Color
In this lesson students explore the properties related to color and how those properties vary with changes in concentration. This lesson introduces the use of a spectrophotometer to measure wavelength and absorbance in colored solutions as well as the use of Beer’s Law to determine an unknown concentration.

Reaction Rate, Concentration, Chemical Change, Reduction, Redox Reaction, Oxidation, Beer's Law  High School
Lesson Plan: Rustbusters! A Lab Activity on Corrosion
In this lesson students learn about factors affecting the rate of corrosion and evaluate the efficiency of different protective coatings to simulate products used in industry when building metal structures like ships or bridges.

Concentration, Le Châtelier's Principle, Reversible Reactions  High School
Lab: Le Chatelier’s Soda
In this lab, students will observe how the equilibrium of a chemical reaction is affected when a change in pressure, temperature, and concentration is applied to the system.

Concentration, Molarity, Titrations, Indicators  High School
Demonstration: How to Perform a Titration
In this demonstration, the teacher will show how a titration is setup and performed. Also, the teacher will utilize different indicators to show how they work and why they are necessary. At the end of the demonstration, the teacher will also explain how to calculate the molarity of the unknown substance.

Concentration, Molarity, Beer's Law  High School
Lab: Beer's Law Discovered
In this laboratory investigation, students will explore the concepts of light absorption, transmittance, and the relationship between absorbance, path length, and concentration of solution.

Mixtures, Concentration, Interdisciplinary, Measurements, Scientific Method  Middle School, High School
Lab: Effect of Salt Concentration on Plants
In this lab, students will observe how salt concentration can affect the structure of a potato tuber.
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