Procedure: Acid and Base Classification
pH paper testing:
1. Obtain a 12-well plate. Note that each well is identified by a number for each substance that will be tested. Add a few drops of each substance into the wells on the plate.
2. For the indicator papers, dip the paper into the solution and record the color. For the pH, use the color chart provided with the pH paper to determine the pH of solution and record that value on your table. If the result is between two numbers, estimate to the nearest tenth. If an electronic pH meter is available, use it to test the pH of all test solutions.
3. Record your results in the data Table.
4. Rinse the glass rod with distilled water and proceed to test the other substances. Record these results in the data table. After all substances have been tested with pH paper, test each substance with red and blue litmus paper.