Is it an acid, base, or neutral? Make your own acid-base indicator from red cabbage, then test various household substances. Acids and bases are classes of materials that have different properties.

Students will be able to explain that if two substances cause turn a pH indicator different colors, they must be different substances. Students will be able to explain that the color that a substance ...

Here are basic step-by-step instructions to make red, yellow and blue using beets, turmeric and cabbage. And from there, with some basic color theory, you can make a whole rainbow of eggs. For the ...