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Petal colour change in basic solution

Petal colour change in basic solution

C023/0203

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Credit

BEAUTIFULCHEMISTRY.NET / SCIENCE PHOTO LIBRARY BEAUTIFULCHEMISTRY.NET / SCIENCE PHOTO LIBRARY

Caption

Wishbone (Torenia fournieri) flower that has had sodium hydroxide solution dropped on to its petal. Where the basic solution has hit, the petal has changed colour from purple to yellow. Many flowers act as indicators, changing colour on contact with acid or bases.

Release details

Model release not required. Property release not required.

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