Testing for Carbon Dioxide, 1 of 2

Testing for Carbon Dioxide, 1 of 2

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Credit: Turtle Rock Scientific/SCIENCE PHOTO LIBRARY

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Caption: Testing for carbon dioxide, 1 of 2. Carbon dioxide gas (CO2) is heavier than air. Here carbon dioxide has been collected in a beaker by displacing oxygen-containing air. When a burning splint is thrust into the beaker, the flame is extinguished. This can be used as a test for carbon dioxide. However, any oxygen-free gas will also extinguish a flame, therefore this test could result in a misidentification.

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Keywords: burn, burning, carbon dioxide, chemical, chemistry, co2, combustion, extinguish, flame, gas, sequence, series, splint, test, testing

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