Respiration experiment

Respiration experiment

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Credit: TREVOR CLIFFORD PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Caption: MODEL RELEASED. Respiration experiment. School student breathing through a tube into a test tube containing lime water (calcium hydroxide solution). Carbon dioxide (CO2) passed into limewater produces a milky suspension of calcium carbonate. As there is a high percentage of carbon dioxide in exhaled air, the lime water turns milky when.

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Keywords: apparatus, breathing, calcium carbonate, calcium hydroxide, carbon dioxide, caucasian, chemical, chemistry, child, cloudy, device, equipment, exhaled air, exhaling, experiment, experimenting, female, girl, glasses, human, lab, laboratory, lime water, limewater, liquid, one person, people, respiration, safety goggles, school, schoolgirl, science education, solution, student, suspension, test tube, test-tube, white, young

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