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How do different pH levels affect the weight of shells in water?
Organization(s):Eshkol Holon
Country:Israel
Student(s):Talia paneth, Denial gean, Lyam motiee, Michael veksler, Imri alfasi, Danial ronen burshtein
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Educator(s):Yossi Bar lev
Contributors:Batya amsalem
Report Type(s):International Virtual Science Symposium Report
Protocols:Conductivity, pH
Presentation Poster:
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Language(s):English
Date Submitted:03/04/2025
The experiment examines the effect of pH levels on shells using five beakers with different pH solutions: hydrochloric acid, sodium hydroxide, and distilled water. One shell was placed in each beaker, and their weight was measured at the beginning and end of the experiment, with pH and conductivity levels also recorded. After one week, the shells were reweighed and the pH and conductivity of the solutions were measured again. The goal was to determine if pH changes affect the shells' weight and how they react to different acidity or basicity. Results may suggest that shells maintain internal stability despite pH changes.