- Acids increase the number of hydrogen ions (H⁺) when added to a chemical.
- Bases increase the number of hydroxide ions (OH⁻) when added to a chemical.
- Ammonia, bleach, and soap are examples of bases.
- A chemical that changes color in the presence of an acid or base is called a pH indicator.
- When an acid and base are mixed together they will always form a salt and water.
- A pH of 0 is called strongly acidic.
- A pH of 7 is called neutral.
- A pH of 14 is called strongly basic.
- Base feel slippery and taste bitter.
- Acid feel sour and taste sour.
Parent Tip: Review the logic above to help your child master the concept of ph worksheet middle school.