Based on the pH values provided, here are the classifications of the substances as acid, base, or neutral:
- Acid rain pH 4: Acid
- Orange juice pH 3: Acid
- Great Salt Lake pH 10: Base
- Banana pH 5: Acid
- Salt water pH 8: Base
- Baking soda pH 9: Base
- Water pH 7: Neutral
In summary:
- Acids: Acid rain, Orange juice, Banana
- Bases: Great Salt Lake, Salt water, Baking soda
- Neutral: Water