Caffeine Science Fair Projects

List of Ideas

Caffeine is a stimulant drug and mild diuretic.
Caffeine (trimethylxanthine coffeine theine mateine guaranine methyltheobromine) is a stimulant drug and mild diuretic. In pure form, caffeine is a white crystalline solid. Icey/Wikipedia Commons
By
Anne Marie Helmenstine, Ph.D.
Anne Marie Helmenstine, Ph.D.
Chemistry Expert
  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College
Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.
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Updated on December 28, 2017

Caffeine is a naturally occurring stimulant that is found in many foods, beverages, and drugs. You can explore the effects of caffeine with your science fair project.

  • How does caffeine affect your pulse rate or body temperature or respiration (breathing) rate? You can test the effect of a cup of coffee, caffeine pill, cola, or energy drink.
  • How does caffeine affect your typing speed? typing accuracy?
  • Does caffeine really increase the effectiveness of other pain relievers?
  • What effect does the presence of caffeine have on other organisms, such as daphnia, zebrafish embryo development, fruit fly activity or behavior or mutation rate, etc.
  • Does watering a plant with water containing caffeine have an effect on the plant? Does watering seeds with caffeinated water affect germination?
  • Does the method of preparing coffee (or tea) affect the total amount of caffeine in the beverage? If so, which method results in a beverage with the most/least caffeine?

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Helmenstine, Anne Marie, Ph.D. "Caffeine Science Fair Projects." ThoughtCo, Aug. 25, 2020, thoughtco.com/caffeine-science-fair-project-ideas-609035. Helmenstine, Anne Marie, Ph.D. (2020, August 25). Caffeine Science Fair Projects. Retrieved from https://www.thoughtco.com/caffeine-science-fair-project-ideas-609035 Helmenstine, Anne Marie, Ph.D. "Caffeine Science Fair Projects." ThoughtCo. https://www.thoughtco.com/caffeine-science-fair-project-ideas-609035 (accessed March 28, 2023).
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