Studies show that high doses could cause cancer in rats, but the regulators maintain that no evidence exists that ingesting the coloring causes cancer in humans.

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. Acid-base indicators change color ...

The color that a substance turns a pH indicator is a characteristic property of that substance. An acid can neutralize a base, and a base can neutralize an acid Students squeeze red cabbage leaves in ...