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Greg Ciolek English 49 cards

Cards in this deck (49)

  1. 1What charge do electrons have?-1
  2. 2What charge will an ion of lithium take?1+ (one electron in the outer shell, needs to lose it)
  3. 3What charge will an ion of beryllium take?2+ (two electrons in the outer shell, needs to lose them both)
  4. 4What charge will an ion of barium take?2+ (group 2 so two electrons in the outer shell, needs to lose them both)
  5. 5What charge will an ion of fluorine take?1- (7 electrons in the outer shell, needs to gain one)
  6. 6If something has gained electrons, what charge will it have?Negative
  7. 7If something has lost electrons, what charge will it have?Positive (because they have lost a negative!)
  8. 8What charge will an ion of oxygen take?2- (6 electrons in outer shell so needs to gain two)
  9. 9What charge will an ion of Selenium take?2- (group 6, so has 6 electrons in the outer shell and needs to gain two)
  10. 10Explain in terms of electrons what occurs when lithium bonds with chlorineOne electron transferred from lithium to chlorine
  11. 11Why do atoms transfer electrons in ionic bonding?So that they can have full outer shells
  12. 12Explain in terms of electrons what occurs when lithium bonds with fluorineOne electron transferred from lithium to fluorine
  13. 13Explain in terms of electrons what occurs when magnesium bonds with oxygenTwo electrons transferred from magnesium to oxygen
  14. 14Explain in terms of electrons what occurs when beryllium bonds with oxygen (3 marks)Two electrons transferred from beryllium to oxygen
  15. 15Explain in terms of electrons what occurs when magnesium bonds with chlorineOne electron transferred from magnesium to two different chlorine atoms
  16. 16Explain in terms of electrons what occurs when sodium bonds with oxygenTwo electrons transferred to an oxygen atom from two different sodium atoms
  17. 17Why do sodium ions and chlorine ions form an ionic bond?There is an electrostatic force of attraction between oppositely charged ions
  18. 18Why don't sulphur ions and oxygen ions form ionic bonds with each other?Both have negative charges so would repel
  19. 19What is the name for a substance made of billions of oppositely charged ions joined together?Giant ionic lattice
  20. 20Define giant ionic latticeA huge 3D network of ions
  21. 21State the melting points of ionic substancesHigh
  22. 22Explain why ionic substances have high melting points.Strong bonds between oppositely charged ions are hard to break
  23. 23Will NaCl(s) conduct electricity?No
  24. 24Will NaCl (aq) conduct electricity?Yes (aq stands for aqueous which means it is dissolved in water)
  25. 25Will NaCl (l) conduct electricity?Yes
  26. 26What does molten mean?Melted
  27. 27Explain why ionic compounds do not conduct electricity when solidBecause the ions are not free to move
  28. 28Explain why ionic compounds conduct electricity in solutionBecause the ions are free to move
  29. 29Explain why ionic compounds conduct electricity when moltenBecause the ions are free to move
  30. 30What does soluble mean?Dissolves in water
  31. 31What does insoluble mean?Does not dissolve in water
  32. 32Magnesium carbonate is insoluble. What do you need to do before it will conduct electricity?Melt it
  33. 33Explain why chlorine and fluorine form covalent bondsThey are both non-metals
  34. 34Complete the sentence: In covalent bonds, electrons are _______________________Shared
  35. 35In ionic bonds, electrons are ___________________Transferred
  36. 36What is the name given to the structure of diamond, graphite and silicon dioxide?Giant covalent
  37. 37How many bonds does each carbon have in diamond?4
  38. 38Explain why diamond has a high melting pointGiant structure, Strong covalent bonds between the atoms, requires a lot of energy to break
  39. 39Explain why most giant covalent substances do not conduct electricity (3 marks)There are no electrons/ions/charged particles that are free to move
  40. 40Explain why graphite conducts electricityHas delocalised electrons between the layers that can move through the graphite
  41. 41Explain why graphite can act as a lubricantWeak forces between layers which are free to slide over each other
  42. 42What is graphene?One layer of graphite
  43. 43What is a fullerene?Substance made of carbon atoms arranged in a cage
  44. 44What type of substance are methane and water?Simple molecular (or simple molecules)
  45. 45What is a molecule?A group of atoms chemically bonded together
  46. 46Describe the structure of simple covalent moleculesStrong covalent bonds between atoms, weak forces holding the molecules together
  47. 47What are intermolecular forces?Weak forces between molecules which hold them together
  48. 48Explain why methane has a low melting pointIt is a simple molecular substance with weak forces between the molecules (which are easy to break)
  49. 49What is a polymer?Millions of small molecules joined together in a chain to form a large molecule

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Flashcards on Untitled, created by Greg Ciolek on 04/02/2019.
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Greg Ciolek
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