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6. If an oxidation state decreases, the compound is...

  • reduced
  • oxidised
  • neutralised

7. What are the conditions of Homolytic fission?

  • presence of UV radiation only
  • high temperatures and any state
  • gas phase with high temperatures only
  • either gas phase with high temperatures OR presence of UV radiation
  • must be in the stratosphere

8. The first ionisation enthalpy increases across a period and decreases down a group

  • True
  • False

9. What is the fourth ionisation enthalpy?

  • X(g) --> 4X+(g) + e-
  • X3+(g) --> X4+(g) + e-
  • X(g) --> X4+(g) + e-
  • X4+(g) --> X4+(g) + e-

10. Define electronegativity

  • How good an atom is at gaining/losing electrons
  • The degree to which an atom of an element repels electrons
  • The degree to which an atom of an element attracts electrons
  • The degree to which an atom of an element gets rid of its electrons

11. The intermolecular bonds for halogens are...

  • covalent
  • polar
  • instantaneous dipole-induced dipole bonds
  • permanent dipole-permanent dipole bonds

12. What is the lattice structure of sodium chloride said to be?

  • simple cubic
  • giant ionic
  • ionic lattice
  • electrostatic bonds

13. In ions, the sum of the oxidation states is equal to...

  • it varies depending on temperature
  • the charge on the ion
  • 0

14. Variable costs depend on...

  • The amount of product manufactured.
  • The recycling of unreacted feedstock.
  • The amount of profit a chemical company makes.
  • The efficiency of a chemical process.

15. What are raw materials?

  • The reactants fed in at the start of a process.
  • The materials that feedstocks are prepared from.
  • Obtained through methods such as fractional distillation.
  • The materials obtained after the processing and conversion of feedstocks.

16. The boiling points increase with a heavier halogen atom, since the overall number of electrons increases and hence do the id-id bonds.

  • True
  • False

17. How many orbitals and electrons can a d sub-shell hold?

  • 3 orbitals, 6 electrons
  • 5 orbitals, 10 electrons
  • 10 orbitals, 5 electrons
  • 2 oribitals, 2 electrons

18. Which of the following are INSOLUBLE

  • AgCl
  • Group 1 Elements
  • All sulfates
  • All chlorides
  • (NH4)2CO3

19. How can you define polar molecules?

  • Only molecules with instantaneous dipoles
  • Only molecules with a permanent dipole
  • All molecules with dipoles
  • All molecules which have bonds

20. How are chlorine and bromine transported?

  • chlorine-as a gas by air travel(in a plane). bromine-as a liquid by rail or road tanker.
  • chlorine-as a gas by rail or road tanker. bromine-in lead-lined steel tanks supported in strong metal frames
  • chlorine-as a liquid by rail or road tanker. bromine-in lead-lined steel tanks supported in strong metal frames
  • chlorine-as a liquid by air travel(in a plane). bromine-as a liquid by rail or road tanker