Based on the pH readings provided, we can classify the substances as acid, base, or neutral according to the following criteria:
- Acid: pH less than 7
- Neutral: pH equal to 7
- Base: pH greater than 7
Here's the classification for each substance listed:
- Water (pH 7) - Neutral
- Great Salt Lake (pH 10) - Base
- Orange juice (pH 3) - Acid
- Acid rain (pH 4) - Acid
- Banana (pH 5) - Acid
- Baking soda (pH 9) - Base
- Salt water (pH 8) - Base
Summary:
- Acids: Orange juice (pH 3), Acid rain (pH 4), Banana (pH 5)
- Bases: Great Salt Lake (pH 10), Baking soda (pH 9), Salt water (pH 8)
- Neutral: Water (pH 7)