Across
- 3. preferred by scientists because it gives more accurate and quick values of pH
- 4. tastes sour and feels rough on the skin
- 7. when pH value is equal to 7
- 8. taste bitter and feel slippery between fingers
- 11. power of hydrogen
- 12. an example of a strong base.
- 15. pH value is closer to 1
- 16. a base dissolved in water
Down
- 1. an acid secrets in human 'stomach
- 2. has high concentration of OH- ions.
- 5. means highly reactive and can damage substances and burn living tissues
- 6. turns into yellow in the presence of acids
- 9. turns into pink or red in the presence of bases
- 10. an example of a household acid
- 13. A natural indicator works similar to universal indicator
- 14. A little amount of acetic acid dissolved in water