76 – 100 of 137 Classroom Resources

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  Solubility, Net Ionic Equation, Precipitate | High School

  Activity: Corrosion and Precipitation Mark as Favorite (7 Favorites)

  In this activity, students will investigate concepts of corrosion and redox as they consider the Flint, Michigan Water Crisis and the question, “How did the lead get into Flint’s drinking water?” As they explore these topics while also considering solubility, students will begin to understand how corrosion control is used to prevent lead from contaminating a drinking water supply.

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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, 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, pH | High School

  Lesson Plan: Investigating Ocean and Marine Algae Mark as Favorite (8 Favorites)

  In this lesson, students will learn about coccolithophores, unicellular marine algae that inhabit the upper layer of the ocean. These phytoplankton form calcium carbonate, calcite, scales called coccoliths and are the biggest calcite producers in the ocean. First, students will observe photos of algal blooms of different types and analyze the photos for similarities and differences. Next, students will be introduced to types of marine algae including coccolithophores and to how ocean pH changes are impacting the availability of carbonate for use in the formation of calcite shells and coccoliths. Students will then plan and carry out a small-scale laboratory to investigate the relationship between the solubility of calcium carbonate and pH. To conclude, students will read an abstract of recent research into coccolithophores and ocean acidification and compare and contrast those findings with their own investigation’s results.

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  Observations, Physical Properties, Solubility, Ionic Bonding | High School, Middle School

  Lab: Microscopic Wonder Mark as Favorite (25 Favorites)

  In this lab, students observe and describe the shape, size, and arrangement of salt crystals at various magnifications under a microscope and then compare the properties of each microscopically.

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  Molarity, Concentration, Molality | High School

  Activity: Particle Level Molarity Mark as Favorite (93 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 Kool-Aid drinks, and then applying that information at the particle level to various models.

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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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  Precipitate, Chemistry Basics, Reactions & Stoichiometry, Solubility Rules, Balancing Equations, Chemical Change, Chemical Change | High School, Middle School

  Lab: Predicting Precipitates Mark as Favorite (30 Favorites)

  In this lab, students use solubility rules to predict which chemical reactions will produce precipitates.

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  Solute & Solvent, Physical Change, Solubility | Middle School, High School

  Lab: Chemistree Mark as Favorite (18 Favorites)

  In this lab, students will prepare a solution to observe a physical change.

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  Identifying an Unknown, Chemical Properties, Solute & Solvent, Mixtures | Middle School, High School

  Lab: Local Water Analysis Mark as Favorite (23 Favorites)

  In this lab, students use simple pool test strips to collect water samples from local water sources, such as area faucets, pools, lakes, rivers, puddles, etc. They will compile all of the collected data to allow students to collectively make observations and ask testable questions. After determining a question of interest, groups of students will organize the related data, research relevant background information, form reasonable conclusions, and present their arguments.

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  Classification of Reactions, Balancing Equations, Solubility Rules, Activity Series, Predicting Products | High School

  Simulation: Predicting Products Mark as Favorite (140 Favorites)

  In this simulation, students will reference an activity series and a solubility chart to accurately predict the products of single replacement and double replacement chemical reactions. Associated particle diagrams will be displayed to help students better comprehend the reaction at the particulate level. Students will also be asked to balance the chemical equation. The simulation is designed as a five question quiz for students to use multiple times.

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

  Simulation: Galvanic/Voltaic Cells Mark as Favorite (79 Favorites)

  In this simulation, students select different metals and aqueous solutions to build a galvanic/voltaic cell that generates electrical energy and observe the corresponding oxidation and reduction half reactions.

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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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  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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  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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  Electromagnetic Spectrum, Molecular Structure, Mixtures | Middle School, High School

  Video: What are Pigments? Video Mark as Favorite (14 Favorites)

  This video discusses the chemistry of pigment molecules and how they are used to give paints their specific color. Students will learn about the importance of a pigment’s molecular structure, how they are physically suspended to create a paint color, as well as how they interact with light.

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  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 (24 Favorites)

  In this lab, students will explore colligative properties in a quantitative approach. They will measure the effect of increasing the molality of a salt solution on the solution’s boiling point, and they will graph their data and use the slope of the line of best fit to calculate the boiling point elevation constant of water. There are three versions of the lab, some of which provide more structure and guidance and others of which are more student-driven.

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

  Lab: Alka-Seltzer & Gas Solubility Mark as Favorite (18 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.

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  Polymers, Molecular Structure, Molecular Structure , Polymers, Solubility | High School

  Video: Ingenious Video 4: How Science Is Fixing Recycling's Grossest Problem Mark as Favorite (2 Favorites)

  Polypropylene recycling has a problem: It stinks. Food and other residues are almost impossible to remove entirely from polypropylene, a.k.a the number “5” plastic of grocery-store fame. Those residues – anything from yogurt to garlic, from fish oil to baby food – not only stick to polypropylene, they degrade there and start to smell even worse! Current polypropylene recycling techniques are more down-cycling than re-cycling. Unless you break down its molecules through a highly energy-intensive refining process, the material can only get a second life as a black trash can or an underground pipe – wherever its smell doesn’t matter. But a new technique, called dissolution recycling, is changing all that. Dissolution recycling uses a special hydrocarbon polymer solvent under finely controlled conditions of temperature and pressure to eliminate ALL of the contaminants embedded in the plastic.

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

  Lab: Finding CO₂ Mass in your Breath Mark as Favorite (40 Favorites)

  In this lab, students will measure how much carbon dioxide they exhale by reacting their exhaled breath with limewater (calcium hydroxide solution). Students will practice writing balanced equations and completing mass-to-mass stoichiometric calculations.

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  Identifying an Unknown, Observations, Physical Change, Physical Properties, Chemical Change, Chemical Properties, Solubility, Precipitate, Indicators | High School

  Lab: Using Qualitative Analysis to Identify Household Compounds Mark as Favorite (64 Favorites)

  In this lab, students will be introduced to common laboratory techniques, safety procedures, lab reagents, and terminology, all while identifying unknown household substances. Students will learn how to use qualitative analysis techniques as a systematic way to identify unknown materials. As part of this process, they will practice careful observation and documentation, as well as identifying relevant physical and chemical properties and changes, including solubility, color change, gas formation, and precipitation of solids.

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  Solubility Rules, Solubility, Ionic Bonding, Predicting Products | High School

  Activity: Solubility Rules Dice Game Mark as Favorite (46 Favorites)

  In this activity, students will use ion dice to form a number of different ionic compounds. Based on the resulting ionic compound, they will use a solubility chart to determine if it is soluble or insoluble. This game will allow students to become more familiar with ionic compounds and solubility rules.

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  Freezing Point Depression, Heat, Phase Changes, Molecular Motion | Middle School, High School

  Lab: Sweet, Salty and Cold as Ice Mark as Favorite (33 Favorites)

  In this lab, students conduct a micro-scale investigation to explore how various solutes affect the freezing point of water. Because of the small volume of liquid used, results are visible within minutes. Students observe what happens to the liquids as they are cooled and use their observations to infer what is going on at the particle level. They will use the results to explain the familiar phenomena of why we salt our roads and sidewalks in the winter and why freshwater lakes and ponds freeze over more easily than saltwater oceans in the winter.