Classroom Resources: Acids & Bases


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  • Stoichiometry, Redox Reaction, Titrations, Oxidation, Half Reactions, Oxidation Number, Reaction | High School

    Lesson Plan: Redox Reactions & Titrations

    This lesson students will review oxidation states, half-reactions, balancing reactions and understand how to complete calculations and perform a redox titration.

  • Observations, Chemical Change, pH, Acid Base Reactions, Chemical Change | High School, Middle School

    Lab: How do Sinkholes Form?

    In this lab students will learn how acidic groundwater reacts with limestone, causing it to erode. Sinkholes form when eroded limestone underneath the surface of the earth can no longer support the ground above it. Students will test how acid reacts with a variety of rocks and determine which rocks would be best to build a city on top of in order to reduce the chance of sinkholes forming.

  • History, pH, Acid & Base Theories, Strong vs Weak | High School, Middle School

    Activity: Acid & Base Guys Video Questions

    In this activity, students will watch a video about the history of acids and bases. They will learn about the evolution of these theories, from Lavoisier to Arrhenius, Bronsted-Lowry, and Lewis.

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

    Lab: Hydrolysis of Salts

    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.

  • Concentration, pH, 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.

  • pH, Acid & Base Theories, Buffers | High School

    Lesson Plan: Preparation and Evaluation of Buffers

    In this lesson students will use multiple methods to calculate and prepare buffered solutions with a desired pH. Upon preparation of the solutions, the students will explore differing aspects of buffers including buffering capacity and predominant form.

  • pH, Strong vs Weak, Equilibrium Constants, Salts | High School

    Lesson Plan: Categorizing, Calculating and Applying Concepts from Weak Acids, Weak Bases and Salts

    In this lesson students will write dissociation reactions to make connections between conjugate acid-base pairs. They will use beaker diagrams in a cooperative group activity to better understand why the pH calculation for a weak acid/base is not the same for a strong acid/base. Finally, students will apply these concepts in a lab in which they will identify several unknown, clear, colorless solutions using factors such as pH, conductivity and reactivity. The activities in this lesson can be used in sequence or as standalone activities.

  • Interdisciplinary, pH, Indicators | High School, Middle School

    Lab: Exhaling Acid

    In this lab students will observe how increased carbon dioxide levels lead to a build-up of acidic conditions.

  • pH, Indicators | High School

    Lab: Exploring the Properties of Acids and Bases

    In this lab, students will rotate through five stations. They will explore the properties of many household substances and discover a few properties of acids and bases.

  • Acid Base Reactions, Stoichiometry, Percent Composition, Titrations, Indicators | High School

    Lab: The Egg-straordinary Issue

    In this lab students will determine the percent composition of calcium carbonate contained in an eggshell by using a back titration in order to address a farmer’s concerns about his hen’s fragile eggs. Two versions of the student lab are included, a scripted version, and an inquiry version.

  • Concentration, pH, 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.

  • Solubility, pH, Molecular Structure, Buffers | High School

    Lab: Aspirin Tablets: Are they all the Same?

    In this lab, students will design an experiment to test the time and completeness of dissolution of various types of aspirin in different pH environments.

  • Identifying an Unknown, Indicators | High School, Middle School

    Lab: Indicators of Acids and Bases

    In this lab, students will use various indicators to identify unknown (clear) solutions as acidic, basic, or neutral.

  • pH, Ionic Bonding, Net Ionic Equation | High School

    Lab: The pH of Salts

    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.

  • pH, Indicators | High School, Middle School

    Lab: Cellular Respiration and pH

    In this lab, students learn how a pH indicator can be used to detect the presence of CO2 when they exhale.

  • Acid Base Reactions, Stoichiometry, Limiting Reactant | High School

    Lab: Fizzy Drink

    In this lab, students will learn the properties of acid and bases while applying the principles of stoichiometry to calculate the amount of base needed to neutralize an acid completely and produce a bubbly drink.

  • pH, Buffers | High School

    Activity: What are Buffers?

    In this activity, students will complete a card sort that will allow them to understand what makes up a buffer solution and how it works to keep pH from changing.

  • History, pH, Acid & Base Theories, Strong vs Weak | High School, Middle School

    Video: Acid & Base Guys Video

    This video tells the story of how the definition of acids and bases has evolved from Lavoisier, to Arrhenius, Bronsted-Lowry, and Lewis.

  • Concentration, Titrations | High School

    Lab: Lethal Dose

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

  • Acid Base Reactions, Titrations | 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.

  • Pros Cons of Nuclear Power, Combustion, Acid Rain | High School

    Activity: Town Meeting

    In this activity, students will learn about acid rain, gas scrubbers, half-life, chain reactions, and other topics around electricity production through a debate on nuclear power.

  • Significant Figures, Titrations, Strong vs Weak | High School

    Lab: Titration Lab with Kinetics

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

  • pH, Titrations, Indicators, Strong vs Weak | High School

    Lab: Titration Curves

    In this lab, students graphically observe a plot of micro acid/base titrations and determine the equivalence point of each plotted curve.

  • pH, Titrations, Indicators, Strong vs Weak | High School

    Lab: Titration

    In this lab, students will learn the difference between strong, weak, and concentrated acids by carrying out various titrations.

  • Chemical Change, Acid Rain | High School

    Activity: Investigating Acid Rain

    In this activity, students will investigate the chemistry of acid rain through web based research. Students will also have the opportunity to observe the reaction between a common acid and a material in a week long simulation and relate their findings to the effects of acid rain.

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