year 8 revision

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