Educational worksheet on acids and bases featuring a pH scale with common household items and questions to identify if substances are acids or bases.

A worksheet titled "Introduction to Acids & Bases" with a pH scale showing household items like stomach acid, lemon, grapes, tomatoes, bananas, milk, water, eggs, baking soda, soap, ammonia, bleach, and oven cleaner, each labeled with its corresponding pH value. The worksheet includes an entry-level question section asking whether substances like sparkling water, toothpaste, orange, laundry soap, dishwater liquid, ketchup, and baking soda are acids or bases, and a more challenging section with coffee, spinach, broccoli, and cayenne pepper.