Science 10 - Acid-Base Review Crossword Puzzle

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Across
  1. 3. Feeling of a base, like floor cleaner or soap.
  2. 5. HNO3
  3. 8. Number of protons in a hydrogen atom.
  4. 9. 11 across (indicator) that is clear in an acidic solution and a key ingredient in disappearing ink.
  5. 12. Zero to seven on the pH scale.
  6. 13. Acid found in lemons, limes and grapefruits.
  7. 14. A dye obtained from certain lichens that is red under acid conditions and blue under basic conditions.
  8. 16. Product of a neutralization reaction (HOH).
  9. 18. Every step on the pH scale is ___ times stronger (or weaker).
  10. 19. Acid found in vinegar.
  11. 23. Ca(OH)2
  12. 25. Taste of a base.
  13. 26. Chemicals that change colour depending on the pH level.
  14. 28. A chemical that changes colour depending if water is present or not.
Down
  1. 1. Chemical used to move information in biology and responsible for heredity.
  2. 2. OH- ions create in water by a base.
  3. 4. Strongest base on the pH scale.
  4. 6. The pH value when 15 down (indicator) turns colour.
  5. 7. Potassium hydroxide.
  6. 10. What the "H" stands for in the "pH scale".
  7. 11. Acid found in both sore muscles and sour milk.
  8. 15. A metal and a nonmetal bonded together into an ionic compound.
  9. 17. Neutral number on the pH scale.
  10. 20. HCl
  11. 21. Basic solution found in your mouth.
  12. 22. Taste of an acid.
  13. 24. Acid created by dissolving CO2 in water, like in soft drinks.
  14. 27. Colour of 12 down (COBALTCHLORIDE) if water is present.