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Potassium flame test

Potassium flame test

A510/0317

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Credit

DAVID TAYLOR / SCIENCE PHOTO LIBRARY DAVID TAYLOR / SCIENCE PHOTO LIBRARY

Caption

Flame test for potassium. A compound containing the element potassium (symbol K) produces a characteristic lilac flame when heated in a bunsen burner. This colour is produced when potassium electrons give off extra energy as a specific type of radiation (in this case it is visible light but it can be radio waves or gamma rays). This distinct energy release is known as an emission spectrum. Each element has its own emission spectrum, which allows it to be identified in different materials.

Release details

Model release not required. Property release not required.

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