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.

This educational film explores acid-base indicators and their color changes in response to acidity. It demonstrates how substances like tea, red cabbage, and litmus paper react when acids are ...

How can just four nitrogenous bases--adenine ... as signals for the next amino acid (Table 1)? These questions were answered by way of several elegant experiments. However, Tsugita and Fraenkel ...