Classroom Resources: Solutions
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Concentration, Solute & Solvent  Middle School, High School
Lesson Plan: Diffusion and Osmosis Mark as Favorite (0 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 semipermeable membrane.

Molarity, Concentration, Solute & Solvent  High School
Activity: Simulation Activity: Preparing Solutions Mark as Favorite (2 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 stepbystep animated process demonstrating this procedure. The simulation is designed as a five question quiz for students to use multiple times.

Balancing Equations, Classification of Reactions, Chemical Change, Identifying an Unknown, Molarity, Concentration  High School
Lab: An Environmental Impact Study Mark as Favorite (7 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.

Density, Concentration, Solute & Solvent  High School
Lab: Test Tube Challenge Mark as Favorite (22 Favorites)
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.

Concentration, Solute & Solvent, Solubility  High School
Demonstration: Saturated Solutions: An Engagement Activity Mark as Favorite (2 Favorites)
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.

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 (3 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.

Solubility, Solute & Solvent, Concentration, Pressure, Temperature  High School
Demonstration: Exploring Gas Solubility Mark as Favorite (1 Favorite)
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.

Acid & Base Theories, Concentration  High School
Lesson Plan: Calculating pH, A Look at Logarithms Mark as Favorite (21 Favorites)
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.

Molarity, Concentration  High School
Activity: Particle Level Molarity Mark as Favorite (33 Favorites)
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, Beer's Law, Electromagnetic Spectrum  High School
Lesson Plan: Using Color to Identify an Unknown Mark as Favorite (6 Favorites)
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.

Chemical Change, Beer's Law, Redox Reaction, Reduction, Oxidation, Concentration, Reaction Rate  High School
Lesson Plan: Rustbusters! A Lab Activity on Corrosion Mark as Favorite (6 Favorites)
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.

Beer's Law, Concentration, Physical Properties  High School
Lesson Plan: Introduction to Color Mark as Favorite (7 Favorites)
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.

Le Châtelier's Principle, Reversible Reactions, Concentration  High School
Lab: Le Chatelier’s Soda Mark as Favorite (31 Favorites)
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.

Titrations, Indicators, Molarity, Concentration  High School
Demonstration: How to Perform a Titration Mark as Favorite (7 Favorites)
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.

Beer's Law, Molarity, Concentration  High School
Lab: Beer's Law Discovered Mark as Favorite (7 Favorites)
In this laboratory investigation, students will explore the concepts of light absorption, transmittance, and the relationship between absorbance, path length, and concentration of solution.

Concentration, Mixtures, Interdisciplinary, Scientific Method, Measurements  Middle School, High School
Lab: Effect of Salt Concentration on Plants Mark as Favorite (4 Favorites)
In this lab, students will observe how salt concentration can affect the structure of a potato tuber.

Titrations, Concentration  High School
Lab: Lethal Dose Mark as Favorite (13 Favorites)
In this lab, students will perform several titrations to calculate the concentration of potentially “lethal” medicycloprophic solutions.

Chemical Change, Limiting Reactant, Classification of Reactions, Percent Yield, Stoichiometry, Concentration, Molarity, Mole Concept, Dimensional Analysis  High School
Demonstration: First Day Review Mark as Favorite (6 Favorites)
In this demonstration, students see evidence of a chemical reaction.

Limiting Reactant, Concentration, Net Ionic Equation, Stoichiometry, Balancing Equations, Precipitate, Mole Concept, Dimensional Analysis  High School
Lab: Finding CO_{2} Mass in your Breath Mark as Favorite (10 Favorites)
In this lab, students will measure how much carbon dioxide they exhale by reacting their exhaled breath with lime water (calcium hydroxide).

Colligative Properties, Boiling Point, Molality, Concentration, Boiling point elevation, Graphing, Accuracy, Physical Properties, Error analysis  High School
Lab: Changing Water's Boiling Point Mark as Favorite (8 Favorites)
Download this lab in which students will explore colligative properties in a quantitative approach.

Titrations, Concentration  High School
Lab: Calculating Acid in LemonLime Soda Mark as Favorite (12 Favorites)
In this lab, students will investigate the molarity of citric acid in a clear, lemonlime flavored soft drink through titrations with 0.10M NaOH and an indicator.

Solubility, Acid Base Reactions, Titrations, Indicators, Intermolecular Forces, Concentration, pH  High School
Lab: AlkaSeltzer & Gas Solubility Mark as Favorite (7 Favorites)
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.