Universal pH test paper provides a quick way to estimate whether a solution is acidic, neutral, or basic. By dipping strips into common household solutions, students can learn how different substances fall along the pH scale.

1. Pour small amounts of each solution into a container or onto a white tile.
2. Dip one fresh universal pH test strip into each solution and immediately compare the color to the pH chart.
3. Record the observed pH and resulting color in the data chart.
4. Repeat for each solution, using a new strip each time.

Testing Substances with pH Paper - teacherhoyles:

📄 Universal pH Test Paper Experiment - Precision Laboratorie: https://www.preclaboratories.com/universal-ph-test-paper-experiment/

• Test additional household products, such as fruit juices, sodas, or shampoos.
• Compare universal pH paper with other pH papers to see differences in sensitivity.
• Try testing environmental samples like rainwater, pond water, or soil extracts.

• Wear safety goggles and gloves when handling strong acids or bases.
• Avoid skin or eye contact with corrosive solutions.
• Work with an adult when handling hazardous materials.
• Do not taste or consume any test substances.
• Wash hands thoroughly after the experiment.
• Dispose of solutions according to local safety guidelines—small household samples can generally be diluted with plenty of water before disposal.

• Which household items were the most acidic? Which were the most basic?
• Why do strong acids and strong bases produce more vivid color changes compared to weak ones?
• How does universal pH paper differ from more precise pH testing methods?
• Why does distilled water usually show a neutral pH of 7?
• Could the pH of some products vary depending on the brand or formulation?