Investigating Phenomena: What Causes pH Color Changes?

by carolinastaff
pH strip

Carolina Phenomenon

Phenomena-driven science! Phenomena are observable, naturally occurring events that are everywhere and spark student questions and investigations. Ask students to observe the DCI-linked phenomenon in the video and complete the attached student sheet prior to remote learning discussions.

Observations: Carefully watch the pH color change video. Gather all the evidence you can from the video, and write down everything you observe.

Generate Questions: What makes the color change? Why does the color change from blue to red to green and back to blue? Why does the original color come back?

Research (include sources):

Final Explanation: Use a written explanation, graphic, or flow chart to present your final explanation for the pH color changes.

Carolina ChemKits®: Milk of Magnesia Rainbow

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