Have students work in pairs and discuss the appearance of the apple slice under the microscope. Ask students to draw what they see and write down as many words as they can to describe it. Press litmus paper against the slice of apple so the paper can soak up the juice in the apple. Discuss with the class the meanings of the words acid and base. They will react with some metals to give off hydrogen gas.
Bases taste bitter and feel slippery.
This can be done as a demonstration lesson or as a small group or paired activity. January - National Oatmeal Month. February - Great American Pies Month. Make your favorite apple pie. March - National Nutrition Month.