Observing the Effects of Acids and Basesby: John Eichinger

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Combining acid/base chemistry, cell biology, and quantitative research methods, this “egg-ceptional” activity promotes a truly interdisciplinary perspective. First, students find out what effect acids and bases have on calcium-based substances such as eggshell and bone. Second, they discover what changes occur when decalcified eggs are placed in solutions of water and corn syrup. Throughout the two exercises, student groups will be measuring, analyzing, and using data to reach valid conclusions.

Grades
  • Middle
Publication Date
5/30/2009

Community ActivitySaved in 85 Libraries

Reviews (5)
  • on Thu Feb 23, 2017 1:54 PM

This lab will be helpful when I teach acids and bases next week to my 8th graders! The procedure is easy to follow and materials are accessible!

Rossy Guzman  (Palmdale, CA)
Rossy Guzman (Palmdale, CA)

  • on Thu Aug 25, 2011 9:32 PM

This chapter brings to light why I LOVE teaching science!! The amazing lab with the egg and/or chicken bones losing their calcium through the wonder acidic - vinegar! Decalcification, osmosis, mass, cell membrane, measurement, data analysis...it's all here for our taking. A lab NO child forgets and willingly repeats.

Alyce Dalzell  (Peyton, CO)
Alyce Dalzell (Peyton, CO)

  • on Wed Mar 09, 2016 11:06 PM

The author presents an interesting, easy to use activity to show students the effects of acids/bases on other objects. It may be a bit hard for some students to make the connections, but they will be engaged and most will learn.

Steve  (St. Johns, FL)
Steve (St. Johns, FL)

  • on Sun Mar 03, 2013 12:34 AM

I am a high school science teacher. I think this lab would work if you met with your students every day. Since my school is on the block-schedule (meets every other day for 90 minutes), this lab would be difficult to do since it requires 3 days for results to occur. I think this lab could be done in one class period but that would require pre-lab setup on you.

Katelin  (Griffith, IN)
Katelin (Griffith, IN)

  • on Thu May 05, 2011 11:59 PM

...but the activity is really about weak acids only. No bases involved. Then, the activity moves on to osmosis. The math involved in measurement and data collection with some statistical analysis. All good math concepts, but they can be done for any investigation. The science explanation is weak. When looking at osmosis, it is important that students understand it is the diffusion of water, Not a bad activity, but I would spend time looking into other resources before I use it as a stand alone. There are truly some difficult concepts for middle school students to understand in this activity.

Susan German  (Hallsville, MO)
Susan German (Hallsville, MO)


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