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Can Acids and Bases Remedy the Body?

Authentic Learning | Adaptation Level | Science

Objectives

  • Determine how an understanding of acids and bases relates to the health of a living organism system.
  • Determine the effectiveness of various antacids or home remedies on an acidic stomach.
  • Determine why some analgesics cause additional stomach upset and are not recommended when pain persists.
  • Evaluate the cost effectiveness of one form (or brand) of antacid/analgesic over another procedure.

Procedure

  • Prepare a "sick" stomach by mixing 1part vinegar to 7 parts of distilled water. 240ml of the mixture is enough for each of 4 groups.
  • Test the effects of each antacid tablet/water mixture on the stomach solution. Use 2 tablets per 240 ml of water for 6 different tests. Have students use the computer interfaced probeware to record the actual ph levels of the stomach, treatment solutions and post-treated stomach. Record data in a table of their creation. Results will automatically load onto DataStudio for graphing.
  • Use the graphing option in DataStudio to compare and analyze the data across groups.
  • Students will complete the same tests using the liquid antacids on the stomach solution.
  • Use the graphing option in DataStudio to compare results across groups. Compare the liquid results to those of the tablets.
  • Students will test the effects of analgesics upon a "normal" stomach. Use plain distilled water for the normal stomach.
  • Use DataStudio to compare results across groups.
  • Students will test unlabeled home remedy mixtures (i.e. lemon juice/water, ginger ale, milk, baking soda/water, and flour/water).
  • Use DataStudio to compare results across groups.

NETS Profiles for Technology Literate Students

  • Use content-specific tools, software, and simulations (e.g., environmental probes, graphing calculators, exploratory environments, Web tools) to support learning and research.
  • Select and use appropriate tools and technology resources to accomplish a variety of tasks and solve problems.

Materials

  • A word processing program such as Microsoft Word or Appleworks.
  • DataStudio software
  • Vinegar
  • Distilled Water
  • Beakers (250 ml)
  • Fleaker (1000ml)
  • Stirring rods
  • Mortar/pestle
  • Pasco Ph Probe
  • Pasco Explorer
  • Computer
  • Pepto Bismol (tabs)
  • Maalox (tabs)
  • Alka Selter
  • Tums (tabs)
  • Generic (tabs)
  • Rolaids (tabs)
  • Bayer Aspirin
  • Lemon Juice
  • Baking Soda
  • Bayer (tabs)
  • Riopan (lq)
  • Maalox (lq)
  • Pepto Bismol (lq)
  • Generic (lq)
  • Generic Aspirin
  • Milk
  • Ginger Ale

Alternatives/Extensions

  • Have students replace other words with clip art.
  • Have students write stories of their own for their partners.
  • Have students print their stories or put them on a web site.

Grade Level: 6-8