1 – 25 of 43 Classroom Resources

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

  Activity: Simulation Activity: Galvanic/Voltaic Cells Mark as Favorite (51 Favorites)

  In this activity, students will use a simulation to create a variety of galvanic/voltaic cells with different electrodes. They will record the cell potential from the voltmeter and will use their data to determine the reduction potential of each half reaction. Students will also identify anodes and cathodes, write half reaction equations and full chemical equations, and view what is happening in each half cell and the salt bridge on a molecular scale.

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  Equilibrium Constants, Le Châtelier's Principle, Gibb's Free Energy , Enthalpy, Entropy, Solubility | High School

  Lesson Plan: Relationship Between Free Energy and the Equilibrium Constant Mark as Favorite (18 Favorites)

  In this lesson, students will explore the relationships between solubility and Keq (specifically Ksp), as well as Keq and ΔG°. First, a guided inquiry activity will introduce the relationship between standard free energy and equilibrium constant with the equation ΔG° = -RTlnKeq. Then data collection regarding solubility of potassium nitrate at various temperatures will lead to the calculation of Ksp and ΔGo for the dissolution reaction at those temperatures. Students will manipulate the equations ΔG° = -RTlnKeq and ΔG° = ΔH° - TΔS° to derive a linear relationship between 1/T and lnKeq, which will then be graphed to determine values for ΔH° and ΔS°.

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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 (13 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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  Le Châtelier's Principle, Reversible Reactions, Concentration | High School

  Lab: Le Chatelier’s Soda Mark as Favorite (94 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.

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  Exothermic & Endothermic, Physical Change, Heat, Temperature, Observations, Intermolecular Forces, Solute & Solvent, Saturated/Unsaturated/Supersaturated | High School, Middle School

  Lesson Plan: Particle Modeling of Hand Warmers Mark as Favorite (25 Favorites)

  In this lesson, students will create a particulate model of matter that explains energy changes and transfer during a physical process, such as the crystallization of a solid from a supersaturated solution.

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  Reaction Rate, Graphing, Temperature, Concentration | High School, Middle School

  Lab: Starch-Iodine Clock Reaction Mark as Favorite (79 Favorites)

  In this lab, students perform an iodine clock reaction to determine how concentration and temperature effect the reaction rate.

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

  Lab: Vinegar Quality Control Mark as Favorite (55 Favorites)

  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.

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  Titrations, Equivalence Point, Indicators, Acid Base Reactions, Chemical Change, Salts, Molarity, Reaction Rate, Order of Reaction , Error Analysis | High School

  Lab: Titration Lab with Kinetics Mark as Favorite (21 Favorites)

  In this lab, students calculate the molarity of an unknown using a titration and also by solving for a dilution.

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  Ionic Bonding, Net Ionic Equation | High School

  Lab: The pH of Salts Mark as Favorite (22 Favorites)

  In this lab, students will determine whether an aqueous solution is acidic, basic, or neutral. Students will write net ionic equations for the hydrolysis of a solution.

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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 (5 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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  Titrations, Concentration, Indicators, Acid Base Reactions, Equivalence Point, Molarity | High School

  Lab: Lethal Dose Mark as Favorite (42 Favorites)

  In this lab, students will perform several titrations to calculate the concentration of potentially “lethal” medicycloprophic solutions.

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  Calorimetry, Exothermic & Endothermic, Temperature, Stoichiometry, Limiting Reactant, Chemical Change, Molarity, Enthalpy, Heat, Concentration, Experimental Design, Scientific Method | High School

  Lab: Less Than Zero Mark as Favorite (45 Favorites)

  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.

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  Salts, Indicators, Strong vs Weak, Net Ionic Equation | High School

  Lab: Hydrolysis of Salts Mark as Favorite (20 Favorites)

  In this lab, students will observe the hydrolysis of several salt samples. They will first predict which solutions are acidic, basic or neutral, and then discover the pH of each through the use of indicators. Students will share and compile their experimental results, as well as have an opportunity to determine the net-ionic equations for each reaction.

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

  Lab: Four-Way Galvanic Cell Mark as Favorite (30 Favorites)

  In this lab, students will build a simple galvanic cell to measure cell potential and will compare their data to theoretical calculations. Students will become more familiar with cells during this opportunity to investigate and compare numerous electrochemistry reactions.

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  Heat of Neutralization, Acid Base Reactions, Exothermic & Endothermic, Temperature, Specific Heat, Calorimetry, Bond Energy, Net Ionic Equation, Molarity, Dimensional Analysis, Measurements, Mole Concept | High School

  Lab: Heat of Neutralization Mark as Favorite (8 Favorites)

  In this lab, students carry out an acid-base reaction to calculate the heat of neutralization based on experimental data. This lab will reinforce the concepts of exothermic and endothermic processes, system and surroundings, and heat of reaction (specifically, neutralization).

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  Limiting Reactant, Acid Base Reactions, Stoichiometry, Indicators, pH, Dimensional Analysis, Mole Concept, Measurements, Concentration, Molarity | High School

  Lab: Acid/Base Stoichiometry Mark as Favorite (18 Favorites)

  In this lab, students experience a limiting reactant and can physically see the difference in amounts of product generated. They also see which reactant is in excess.

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  Strong vs Weak, Titrations, Acid Base Reactions, Equivalence Point, Indicators, pH, Concentration, Molarity, Measurements | High School

  Lab: Acid Base Reactions Mark as Favorite (9 Favorites)

  In this lab, students will witness a reaction between an acid and base. One will be strong, and the other may be weak or strong--it's up to them to determine.

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  Titrations, Indicators, Molarity, Concentration | High School

  Demonstration: How to Perform a Titration Mark as Favorite (42 Favorites)

  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.

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  Concentration, Beer's Law, Electromagnetic Spectrum | High School

  Lesson Plan: Using Color to Identify an Unknown Mark as Favorite (20 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.

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  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 (23 Favorites)

  In this demonstration, students see evidence of a chemical reaction.

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  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 (13 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.

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  Titrations, Concentration, Acid Base Reactions, Indicators, Molarity, Interdisciplinary | High School

  Lab: Calculating Acid in Lemon-Lime Soda Mark as Favorite (56 Favorites)

  In this lab, students will investigate the molarity of citric acid in a clear, lemon-lime flavored soft drink through titrations with 0.10M NaOH and an indicator.

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  Beer's Law, Concentration, Physical Properties | High School

  Lesson Plan: Introduction to Color Mark as Favorite (11 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.

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  Intermolecular Forces, Mixtures, Intermolecular Forces, Colligative Properties, Freezing Point Depression, Solubility, Polarity, Phase Changes, Freezing Point, Density, Mixtures, Physical Properties | High School

  Lesson Plan: Fuel Line Antifreeze Mark as Favorite (15 Favorites)

  In this lesson students will explore the role of a gasoline additive, fuel line antifreeze (generally methanol or 2‑propanol), in reducing the potential of water to block fuel lines in freezing weather. Students will prepare test tube models of water-contaminated fuel tanks and explore the effect of adding different types of fuel line antifreeze. This lesson can be used to bolster concepts about miscibility, density, intermolecular forces, phase changes (freezing), and colligative properties (freezing point depression).

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  Stoichiometry, Beer's Law | High School

  Lesson Plan: Aspirin Synthesis and Spectroscopy Analysis Mark as Favorite (16 Favorites)

  In this lesson, students will synthesize aspirin and analyze the end product using spectroscopy by applying Beer’s Law.