Here are some things you might see and hear as your group begins its exploration. Let's make a prediction. Continue your exploration using the Indicator Armadillo Data Sheet as a guide to your activities. We can use indicators to tell us whether a substance is an acid, a base, or a neutral. Understanding acids and bases is important to many scientists and other people in their work.
Pure water is an example of a neutral substance.
Vinegar, rain, lake water in some places, and fruit juices such as orange and lemon juice are weak acids. Baking soda in water, and some shampoos, detergents are weak bases. There are also strong acids that must be handled carefully using safety precautions and not by children. Although this was a science activity, it did involve some math skills. The math skills involved were measuring, remembering sequence and recording data.