Acids and Bases


  • This “Acid and Base” (doc) worksheet from Mr. Guch’s Calvacade of Chemistry uses the Brønsted-Lowry theory of acids and bases.
  • Mr. Guch provides these worksheets for practice with pH: “pH Practice” (doc), “pH Calcuations” (pdf), and “pH Review Problems (pdf). All Mr. Guch’s worksheets include answers.
  • Dr. Greenbowe has a “Solutions of Acids, Bases, and Salts” simulation that allows students to use a pH meter to test solutions of various acids and bases at differing molarities. He also has an accompanying tutorial with worksheet.
  • Try this pH Scale online activity that has students place common household products in the correct order according to their pH.
  • For practice with molarity, try Mr. Guch’s “Molarity Practice Problems” (pdf) and “Molarity Calculation” (pdf) worksheets.
  • Dr. Greenbowe’s “Determining of the Molarity of an Acid or Base Solution” simulation is also accompanied with a tutorial with activity.
  • Play this online “Ph and pOH” game.
  • Dr. Greenbowe’s “Buffered Solution” simulation is accompanied by this activity.
  • Have students do this printable “Acids and Alkali” crossword puzzle with answers. The author tells you to set your printer options to print the background. To do this, select “Tools” in your browser, then “internet options”, select the “advanced” tab and scroll down to “Printing” and place a check in the box, “Print background colors and images.”
  • The ChemCollective offers this problem set on “Acid Base Chemistry and Buffers.”
  • Mr. Guch’s site also this “Dilutions Worksheet” (doc) and this “Intermolecular Forces” (doc) worksheet.
  • Have students do this “Acids, Bases, and pH” (doc) wordsearch puzzle with answers (doc).
  • Use the “GEMS Alien Juice Bar” to complete the “GEMS Alien Juice Bar Activity” (pdf).
  • Try this “Acids and Bases” (pdf) crossword puzzle with answers.
  • Vanderbilt Student Volunteers for Science have created this whole unit, “pH (doc),” to introduce students to acids, bases, and the pH scale.


  • Prepare your indicator using red cabbage in this “Making a pH Indicator” (doc) lab. Then, try this “Cabbage Juice Indicator pH” (pdf) lab.
  • Demonstrate pH with the reaction between the hydrogen ion and hydrogen carbonate ion in this “pH: It’s a Gas” demo.
  • Do this colorful “Acid and Base Demonstration.” Several companies offer kits called “MOM to the Rescue:” that work similarly to this.
  • Do this “Testing the pH of Oxides” (doc) lab.
  • Another pH testing (doc) lab.
  • Test these text book style strong acid and base problems using ChemCollective’s “Virtual Lab.”
  • Have fun with the “Disappearing Ink” (doc) lab.
  • Try this “Metals and Acids” (doc) using sulfuric acid and zinc.
  • Do this “Titration of Sodium Hydroxide With Hydrochloric Acid” (doc) lab.
  • Or do this micro-scale “Titration of Vinegar” lab to determine the amount of acetic acid in a sample of vinegar.
  • Do the Flinn Scientific, Inc. “Disappearing Rainbow” (pdf) demonstration where a rainbow of solution colors appear and disappear as acids and bases are added to a series of indicators.
  • To see if student’s have properly cleaned up their lab area, do Flinn Scientific Inc.’s “The Indicator Sponge” (pdf) demo.
  • Do Mrs. J’s “Household Acids and Bases Lab” (doc).
  • Do the Flinn Scientific Inc. “Orange Juice to Strawberry Float: A Foamy Acid-Base Demonstration” (pdf).
  • In the Flinn Scientific, Inc. “Disappearing Ink-Thymolphthalein, an Acid–Base Indicator” (pdf) lab, students write secret messages using a disappearing ink sample and then use chemistry to develop and transmit the messages.
  • In Ron Brandt’s “Lemonade Anyone?” (doc) lab students determine the concentration of six different bottles of lemonade using qualitative and quantitative measurements.
  • In Tom Bartik’s “Soft Drink Lab” (doc) students test two sodas to determine which has the greatest amount of acid.


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