C2 Knowledge Test

  1. Why did Mendeleev leave gaps in his version of the Periodic Table?
  2. Which side of the periodic table are the metals on?
  3. How did Mendeleev decide on the order of the elements in the periodic table?
  4. Name the three particles found in an atom and the charge on each of these.
  5. Complete the sentence ‘All atoms of one type of element have the same number of ….’
  6. What can you say about the number of protons and electrons in an atom?
  7. What does the atomic number tell us about the particles in an atom?
  8. What does the atomic mass tell us about the particles in an atom?
  9. How is an isotope different from an atom?
  10. What name do we give to the rows and columns in a periodic table?
  11. Draw the electronic configuration for element number 6 and element number 17.
  12. How does the group number on the periodic table relate to the number of electrons in an atom?
  13. How many electrons can fit into shell number 1 and shell number 2?
  14. Define compound.
  15. Define ion, cation and anion.
  16. How is an ionic bond formed?
  17. How is a sodium ion formed from a sodium atom?
  18. How is a Chloride ion formed from a chlorine atom?
  19. In what ratio will group 1 and group 7 elements combine?
  20. In what ratio will group 2 and group 7 elements combine?
  21. If a compound ends in ‘ide’ what does this mean?
  22. If a compound ends in ‘ate’ what does this mean?
  23. What is the formula of the following compounds – copper sulphate, sodium chloride, sodium hydroxide, potassium bromide, magnesium nitrate.
  24. Describe the structure of an ionic compound (lattice).
  25. Describe 3 properties of ionic substances.
  26. How do the properties of silver and lead chloride differ from all other chlorides?
  27. Write a word and symbol equation (with state symbols) for the reaction between Silver nitrate and sodium chloride.
  28. Give two reasons why barium sulphate is given as a barium meal.
  29. What colour flame will the following ions burn with; K+, Na+, Ca2+, Cu2+
  30. Which two elements were discovered using spectroscopy?
  31. How is a covalent bond formed?
  32. Draw the structure of the following molecules: hydrogen, hydrogen chloride, carbon dioxide, methane.
  33. Give three properties of covalent molecules.
  34. Give two examples of giant covalent molecules.
  35. State what diamond and graphite are used for.
  36. Describe how you would separate two immiscible liquids.
  37. What technique would you use to separate two miscible liquids?
  38. What technique would you use to separate a mixture of coloured dyes.
  39. What is an Rf value and how do you calculate it?
  40. Describe the structure of metals.
  41. Give two properties of most transition metals.
  42. Give two properties of the gp. 1 metals.
  43. Write a word and symbol equation for the reaction of a group 1 metal with water.
  44. How would you expect the reactivity of rubidium to compare with lithium. Explain your reason.
  45. Give the colour and state of each of the gp. 7 elements at room temperature.
  46. Write a word and symbol equation for a group 7 element with a group 1 element.
  47. What type of substance will be formed when a halogen reacts with hydrogen?
  48. How does reactivity change within the halogen group?
  49. Why are the noble gases chemically inert?
  50. State 2 noble gases and give 1 use of each.
  51. Define ‘exothermic change’ and ‘endothermic change’.
  52. Describe what happens to bonds in exothermic and endothermic reactions.
  53. State three factors that will increase the rate of reaction between hydrochloric acid and marble chips.
  54. Why might particles collide but not react?
  55. Define ‘catalyst’.
  56. Describe the key features of a catalytic converter in a car.
  57. Calculate the RFM of Magnesium Sulfate and Calcium Chloride. Show your working.
  58. Calculate the empirical formula of lithium carbonate if a sample contains 2.8g of lithium, 2.4g of carbon and 9.6g of oxygen.
  59. Calculate the percentage of oxygen in Potassium Nitrate.
  60. Write a balanced equation for the reaction between Sodium Hydroxide and Hydrochloric Acid.
  61. What do we mean by yield?
  62. Why is the theoretical yield often different from the actual yield?
  63. Many reactions produce waste products. Why is this a problem?
  64. Chemists in industry are constantly looking for new ways to…. (3 reasons)
  65. Iron is extracted from iron ore by reduction with carbon monoxide. Write an equation for this process.