Chemical Bonding<br />Notes<br />Ionic bondingCovalent bondingMetallic bondingType of substanceIonic compoundsSimple coval...
Sodium chloride
Water
Silicon dioxide
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Chemical bonding

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Transcript of "Chemical bonding"

  1. 1. Chemical Bonding<br />Notes<br />Ionic bondingCovalent bondingMetallic bondingType of substanceIonic compoundsSimple covalent compoundsGiant macromolecular compoundsMetal elementsFormation Electron exchangeElectron sharingElectron sharingBoiling, melting pointhighlowhighHighElectrical conductivityOnly when aqueous and moltenNANAIn all statesSolubleIn water, not in organic solventsIn organic solvents, not in waterNANA<br />Graphite<br />- A giant macromolecule of carbon atoms<br />- Each carbon atom only uses 3 of its 4 valence electrons for bonding<br />- The 4th electron is free to conduct electricity<br />- Strong covalent bonds IN layers<br />- High melting point, high boiling point<br />- Weak van der Waal’s forces BETWEEN layers<br />- Soft and brittle<br />Diamond<br />- Giant, tetrahedral structure of carbon atoms<br />- All 4 valence electrons in each carbon atom are used for covalent bonding<br />- No electrical conductivity<br />- High melting point, high boiling point<br />- Hard, strong<br />Workout questions<br /><ul><li>Which of the following substances has a macromolecular structure?
  2. 2. Sodium chloride
  3. 3. Water
  4. 4. Silicon dioxide
  5. 5. Sulphur dioxide
  6. 6. Which of the following substances have the best electrical conductivity?
  7. 7. H2O (g)
  8. 8. NaCl (s)
  9. 9. NaCl (aq)
  10. 10. Diamond
  11. 11. Which of the following substances is likely to have the highest boiling point?
  12. 12. Magnesium sulphate
  13. 13. Nitrogen oxide
  14. 14. Phosphorus dioxide
  15. 15. Fluorine gas
  16. 16. If element X forms the ionic compound XBr, how many valence electrons does X have?
  17. 17. 1
  18. 18. 7
  19. 19. 0
  20. 20. 8
  21. 21. If element Y forms the covalent compound YCl, how many valence electrons does Y have?
  22. 22. 1
  23. 23. 7
  24. 24. 9
  25. 25. 8
  26. 26. With which of the following will sodium form an ionic compound?
  27. 27. Magnesium
  28. 28. Zinc
  29. 29. Iodine
  30. 30. Water
  31. 31. Which of the following statements are true about diamond and graphite?
  32. 32. Both conduct electricity although they are covalent compounds
  33. 33. They have van der Waals forces
  34. 34. They are both made of carbon only
  35. 35. They are both made of carbon and lead
  36. 36. Draw dot and cross diagrams showing only valence electrons to represent the bonds in
  37. 37. A sulphate ion
  38. 38. Ammonia
  39. 39. An ammonium ion
  40. 40. Aluminium Chloride
  41. 41. With the help of a suitable diagram, illustrate the type of bonding present in Iron and explain why it is able to conduct electricity well.
  42. 42. ______________________________________________________________________________
  43. 43. ______________________________________________________________________________
  44. 44. ______________________________________________________________________________
  45. 45. Explain the following phenomena:
  46. 46. Graphite is a covalent molecule, yet it is able to conduct electricity
  47. 47. ________________________________________________________________________
  48. 48. ________________________________________________________________________
  49. 49. Carbon dioxide is a gas and silicon dioxide is a solid at r.t.p.
  50. 50. ________________________________________________________________________
  51. 51. ________________________________________________________________________
  52. 52. Sodium chloride can conduct electricity when aqueous and molten, but not when solid
  53. 53. ________________________________________________________________________
  54. 54. ________________________________________________________________________
  55. 55. At room temperature and pressure, there is a solid and a gas. One of them is sulphur oxide and the other is copper oxide. Which is which? Explain.
  56. 56. ______________________________________________________________________________
  57. 57. ______________________________________________________________________________

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