Tracking Acidity in Rain Water

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Updated on Apr 18, 2013


In this experiment, we will explore patterns of acidity in rain water.


  • Several rainy days
  • pH paper with chart indicator
  • Standard beakers
  • Pen/paper for notes


  1. On a rainy day, take a beaker outside and allow it to fill up with water. About ¾ full would do the trick.
  2. Come back inside and dip the strip of Ph paper in the water. Take the strip out, note the color and compare it on the color guide to find out the Ph. Record this number.
  3. Repeat steps 1-2 for at least seven rainy days. Did you notice an differences in Ph or is it exactly the same?
  4. Evaluate your results.
Sofia PC is currently a college student with a deep interest in science who is aspiring to become a writer. She writes about all sorts of things across all subjects including, but not limited to; science, crafts, and fashion. She hopes to become a good writer so she can share her thoughts and experiences with the world and future generations.