Practical Applications
## What Are Acids and Bases?
Acids donate H⁺ ions; bases accept them. The pH scale (0-14) measures how acidic or basic a solution is.
### pH in the Real World
- Stomach acid helps digest food (very acidic, low pH).
- Soap is basic (high pH) and helps break down grease.
## Why It Matters
Understanding acids, bases, and pH keeps swimming pools clean, helps plants grow, and even prevents tooth decay!
### More Cool Uses
- Environmental scientists monitor lake pH to protect wildlife.
- Farmers adjust soil pH for better crops.
Examples
- Lemon juice is an acid that can clean tarnished metal.
- Baking soda (a base) neutralizes odors in your fridge.