Again, list these in the appropriate columns. Tell students that in this lesson they will discover whether their responses were accurate. Web Work 1. Instruct students to access the online tutorial below, which explores the world of acids and bases. Before students go to the Web site, tell them they are to find differences between acids and bases in the way they react with water.
Students can then begin to develop definitions for acids and bases.
After students have prepared these preliminary definitions, ask them to write a paragraph explaining and comparing acids and bases. Next, have students investigate the pH scale as it relates to the definitions of acids and bases. Wrap-Up Divide the class into pairs. Give each pair a supply of pH paper. Students should complete the table.