Floral pigments as litmus solutions

In physical science laboratory 132, the students gather flowers to test as potential litmus solutions. Once a floral pigment is found to be effective - changes to different colors when an acid or base is added, then the floral litmus solution is used to test household products to determine if they are acidic, basic, or neutral.

The flower petals are boiled in water. Hibiscus tiliaceus and a dark red coleus often prove to be most effective in detecting acids and bases.

Nicole studies a color chart. The student's tables include a description of the color. Color descriptions are based not on a scientific color scheme, but rather a more common set of colors - those found in a box of Crayola crayons. The students also have reference to the X11 colors they learned about in laboratory 11.

Divine Grace and Chersea also study a color chart.

Yasko tests the household "unknowns".

Benskin and Nicole.


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