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RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY
Acid reacting with calcium carbonate. Close-up footage of chips of calcium carbonate being added to and reacting with a concentrated acid in the bottom of a conical flask. One of the products of the reaction between calcium carbonate and an acid is carbon dioxide, seen fizzing and bubbling out of the liquid here. The flask is on a mass balance as part of an experiment designed to demonstrate that mass (in the form of carbon dioxide gas) is lost during this reaction.
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