year 8 revision

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Across
  1. 3. Substance containing one type of atom only (7)
  2. 6. Why doesn't photosynthesis work in very cold or very hot conditions? (7)
  3. 10. Substance containing more than one type of atom which are joined together with a chemical bond (8)
  4. 12. The smallest unit of an element (4)
  5. 13. Substance containing more than one atom which are joined together with a chemical bond (8)
  6. 17. The rate of this is increased at high temperature and low humidity (13)
  7. 18. The monomer used to make poly(ethene) (6)
  8. 20. This gas burns with a squeaky pop (8)
  9. 21. The charge of an ion with more protons than electrons (8)
  10. 23. A process that occurs inside mitochondria (11)
  11. 26. The charge of an ion with more electrons than protons (8)
  12. 27. Holes on the underside of leaves that allow carbon dioxide to diffuse into the leaf (7)
  13. 30. A type of material used in making pottery (7)
  14. 32. The type of metal salt produced when a metal reacts with phosphoric acid (9)
  15. 34. The equipment used to measure the rate of transpiration (9)
  16. 35. A particle with no charge with a relative mass of 1 (7)
  17. 37. A food product made by bacteria (7)
  18. 38. A particle with a tiny mass and a negative charge (8)
  19. 40. Organisms that must eat other organisms for food (7)
  20. 41. A polymer used in bullet proof vests (6)
  21. 42. A tube through which glucose flows in plants (6)
Down
  1. 1. The sugar produced by photosynthesis (7)
  2. 2. The organ where photosynthesis occurs in plants (4)
  3. 4. A tube through which water flows in plants (5)
  4. 5. This can be added if a plant growth is poor (10)
  5. 7. This solution turns cloudy if carbon dioxide is bubbled through it (9)
  6. 8. A particle with a positive charge and a relative mass of 1 (6)
  7. 9. A common disease caused by a virus (9)
  8. 11. A process that occurs inside chloroplasts (14)
  9. 14. NPK Fertilisers are made of nitrogen, phosphorous and …. (9)
  10. 15. The type of metal salt that can be broken down by heating and fizzes when added to acid (9)
  11. 16. The type of metal salt produced when a metal reacts with hydrochloric acid (8)
  12. 19. Dull, brittle, insulator; which type of substance? (8)
  13. 22. A food product made by fungus (5)
  14. 24. The type of metal salt produced when a metal reacts with sulphuric acid (8)
  15. 25. The type of microorganism that causes cholera (8)
  16. 28. The type of microorganism that causes HIV (5)
  17. 29. A large molecule made from many smaller monomers (7)
  18. 31. The type of microorganism that causes athlete's foot (6)
  19. 33. Organisms that can produce their own food (6)
  20. 36. A pair of cells that create the stomata (5)
  21. 39. The type of metal salt produced when a metal reacts with nitric acid (7)
  22. 43. The gas produced by photosynthesis (6)
  23. 44. Shiny, strong, ductile, malleable, conductor; which type of substance? (5)