Calcium Reacting With Water
by Science Photo Library
Title
Calcium Reacting With Water
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Calcium reacting with water, initial stage. Calcium metal (Ca) reacts vigorously with water (H2O), producing hydrogen gas (H2) bubbles and slightly soluble calcium hydroxide (Ca(OH)2): Ca + H2O -> Ca(OH)2 + H2. Here, a piece of calcium has been dropped into a test tube with water. Calcium first sinks (as seen here) but then bubbles up due to the hydrogen gas produced. Calcium hydroxide is later seen as white precipitate (see C040/2668).
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October 20th, 2019
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