Classroom Resources: Solutions


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  • Concentration, Solute & Solvent | High School, Middle 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 semi-permeable membrane.

  • Concentration, Solute & Solvent, 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 step-by-step animated process demonstrating this procedure.

  • Concentration, Solute & Solvent, 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 step-by-step 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, Concentration, Solute & Solvent | High School

    Lab: Test Tube Challenge

    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.

  • Solubility, Concentration, Solute & Solvent | High School

    Demonstration: Saturated Solutions: An Engagement Activity

    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.

  • Concentration, Molarity, Net Ionic Equation, Acid & Base Theories, Titrations, Indicators, Strong vs Weak, 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, Temperature, Pressure, Concentration, Solute & Solvent | 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 post-demonstration 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 base-10 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 Kool-Aid 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.

  • Concentration, Reaction Rate, Reduction, Redox Reaction, Chemical Change, 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, Reversible Reactions, Le Châtelier's Principle | 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, Solute & Solvent, Chemical Change | Middle School, Elementary School

    Demonstration: Soft Eggs

    In this demonstration, students will first observe a reaction between vinegar (acetic acid) and an egg shell (calcium carbonate) to produce a naked egg. Using these eggs, student will analyze how certain substances can move through a membrane and also determine if the membrane is affected.

  • Concentration, Molarity, Titrations, Indicators | High School

    Demonstration: How to Perform a Titration

    In this demonstration, the teacher will show how a titration is set-up 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, Interdisciplinary, Concentration, Measurements, Scientific Method | High School, Middle 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.

  • 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

    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, Calorimetry, Heat, Temperature, Exothermic & Endothermic, 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, Acid Base Reactions, Molarity, Titrations, Indicators, Equivalence Point | High School

    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

    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.

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

    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.

  • Mixtures, Solubility, Percent Composition, Concentration, Solute & Solvent | Middle School

    Lab: The Perfect Kool-Aid Concentration

    In this lab, the students will investigate how the concentration of a solution affects its properties such as color and taste.

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