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EP P2 Science: Investigating Moon Rocks

The experiment was led by science teachers Ms. Supimporn Sutantiwannakul and Mr. Ahmet Haluk Odabas, along with their bright students. This hands-on project began by mixing baking soda and glitter, to add sparkle, then tinting the mixture with black watercolor paint to achieve a lunar grey color. Water was gradually added until the mixture became moldable dough. The students then shaped it into irregular, cratered "moon rocks," which were left overnight to dry completely. The purpose was to mimic the textures of the real lunar surface of our moon.

Once dried, each moon rock was placed in a clear plastic cup. Using eyedroppers, students slowly add vinegar. This process allowed them to observe the fizzing and bubbling that occurs due to the acid-base reaction between vinegar (an acid) and baking soda (a base). The reaction produced carbon dioxide gas (CO₂), transforming the rock from a solid into a bubbling liquid slurry, providing an engaging sensory experience during observation.

This simple experiment illustrated the release of gas (CO₂) and the solid-to-liquid change. After that the students were guided to discuss key quantitative skills and scientific thinking using the experiment comprehension worksheet.