Pack 14: Acids and Bases Due: Name:__________________________________ Date:____________ Online pH Activity 1. Go to the following website: http://www.miamisci.org/ph/ 2. Click on the “Explore” Icon. a. Use the pH Panel to test the pH of the 12 substances provided. Record your results in the table below. SUBSTANCE pH COLOR OF LITMUS Lemon Juice Baking Soda Aspirin Ammonia Milk of Magnesia Lava Soap Borax Water Lemon Soap Vinegar Tonic Water Liquid Plumber b. Draw a pH scale below and place the substances above in the appropriate spots. 3. Click on the “Expand” icon. a. Which product(s) do you predict will clean the penny the best? (Do this first!!) b. Test your theory by clicking on each substance and checking the results. Complete the table below with your results. SUBSTANCE Baking Soda Vinegar Lava Soap Lemon Juice RESULT c. Which product(s) cleaned the penny best? Why? 4. Click on the “Explain” icon. a. What happens to acid when it’s poured into water? b. What happens to base when it’s poured into water? c. Click on the highlights ‘pH table’. Answer the following questions: i. Do you see any patterns? ii. Which substances would be safe to touch? iii. Which substances would be unsafe to touch? iv. What is the pH range of most foods?