Chapter 9-10 Crossword (Acid, Base, pH, Chem. Rxns)

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Across
  1. 4. The number that indicates the relative strength of acids and bases in a substance.
  2. 6. Type of reaction that releases heat
  3. 7. The chemical reaction that occurs when burning something.
  4. 9. Has a pH ranging from 11-14
  5. 11. Has a pH ranging from 8-10
  6. 15. A substance that is present at the start of a chemical reaction.
  7. 16. An ion that has a positive charge.
  8. 18. A change in a substance that does not change its identity
  9. 22. Reactions that form water and salt upon mixing of an acid and a base.
  10. 23. Has a pH ranging from 4-6
Down
  1. 1. Matter is not created nor destroyed in any chemical or physical change.
  2. 2. Occurs when two or more molecules interact and change into a new substance.
  3. 3. A substance that releases hydrogen ions (H+). Has a sour taste and low pH.
  4. 5. scale Ranges from the number 0-14. Used to measure how strong or weak an acid/base is.
  5. 8. Has a pH of 7
  6. 10. A substance that releases hydroxide ions (OH-). Has a bitter taste and high pH.
  7. 12. A solid that forms from a solution during a chemical reaction.
  8. 13. Has a pH ranging from 0-3
  9. 14. Test strips that contain compounds; change color when in contact with a substance.
  10. 17. An ion that has a negative charge.
  11. 19. An atom that has a positive or negative charge.
  12. 20. Type of reaction that absorbs heat
  13. 21. When an acid and a base combine changing the pH to be neutral.