Dyeing a flower

Dyeing a flower

We spray a transparent liquid on the petals of a flower and watch it turn purple. Let’s learn the chemical trick behind this phenomenon.

02:09

Chemistry

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On-screen labels

Aqueous solution of ammonia, Phenolphthalein, pH adjustment, Acid, Neutral, Basic, Ammonia (NH3), Alkaline, The reaction, Lab work and titration, Used to treat an upset stomach

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Glutamic acid

One of the 20 amino acids that make up proteins.

Formic acid (methanoic acid) (HCOOH)

Formic acid is the simplest carboxylic acid.

Tyrosine

One of the 20 amino acids that make up proteins. It contains an aromatic ring as part of...

2-deoxy-beta-D-ribose (C₅H₁₀O₄)

A component of DNA, it contains one less hydroxyl group than β-D-ribose.

Aspartic acid

One of the twenty protein-building amino acids.

RNA

A polynucleotid made up of phosphoric acid, ribose, and nucleobases (cytosine, uracil,...

Tryptophan

One of the 20 amino acids that make up proteins. It contains an aromatic ring as part of...

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