Inquire!

• What is the mechanism of action for antacids?
• Do they all antacids have the same efficacy?

Explore: Determine the pH of common solutions

1. Use the table below to indicate whether an item is acid or base and what you predict the pH to be.:

   Solution	Acid or Base	Predicted pH	Actual pH
   Coffee
   Cola
   Distilled H2O
   Detergent
   Bleach
   Apple Juice
   Antacid Solution

2. Using the pH meter or simulation at https://phet.colorado.edu/sims/html/ph-scale/latest/ph-scale_en.html, measure the pH and validate your predictions