Physical and chemical changes

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Across
  1. 2. something that takes up the shape of the container
  2. 3. when dissolved in water releases H+ ions
  3. 5. Colour of a neutral solution with universal indicator
  4. 6. A substance with pH 9
  5. 9. A pure substance
  6. 10. A substance turns red when universal indicator is added to it
  7. 12. A yellow substance suspended in liquid upon mixing potassium iodide and lead nitrate
  8. 13. when dissolved in water releases OH- Ions
  9. 14. A chemical reaction between an acid and a base
  10. 15. Complete combustion in a bunsen burner produces
Down
  1. 1. Hammering a nail into wood
  2. 4. Insufficient supply of oxygen in a bunsen burner produces
  3. 7. A chemical change responsible for changing the colour of iron
  4. 8. Glucose combines with oxygen in cells of our body to release carbon dioxide and energy
  5. 11. Precipitate is always