Chemistry

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Across
  1. 2. Having a low pH (6)
  2. 5. Seen when a gas is produced (7)
  3. 8. Where electrons are found in an atom (5)
  4. 10. A charged atom (3)
  5. 11. Lots of water and few acid/base particles (6)
  6. 12. Term given to electrons in outer shell of an atom (7)
  7. 13. Substance with lots of hydrogen ions (4)
  8. 15. Subatomic particle with a negative charge (8)
  9. 17. A pH of 7 means this (7)
  10. 19. Reacting an acid and a base (14)
  11. 22. Being able to shape metals (12)
  12. 23. Substance with lots of hydroxide ions (4)
  13. 25. Reaction forming nothing new (8,6)
  14. 26. Protons and neutrons in an atom (4,6)
  15. 29. Lots of acid/base particles and little water (12)
  16. 30. Subatomic particle with no charge (7)
Down
  1. 1. Base that dissolves in water (6)
  2. 3. Measure of acidity or basicity (2,5)
  3. 4. Product in all acid reactions (4)
  4. 6. Centre of an atom (7)
  5. 7. Chemical used to test for carbon dioxide (9)
  6. 9. Mixed metals (6)
  7. 11. Drawing metals into wires (9)
  8. 14. Product in acid-carbonate reaction (6,7)
  9. 16. Reaction forming new substances (8,6)
  10. 18. Number of protons in an atom (6,6)
  11. 20. Made of two or more types of bonded atoms (8)
  12. 21. Elements on the left side of the Periodic Table (6)
  13. 23. Having a high pH (5)
  14. 24. Shininess of metals (6)
  15. 25. Subatomic particle with a positive charge (6)
  16. 27. Made up of different unbonded atoms (7)
  17. 28. Made of one type of atom (7)