Edexcel C2 Revision

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Across
  1. 4. sulfate the insoluble salt given to patients before an x-ray (6, 7) (solubility and chemical tests)
  2. 6. the charge of a neutron (atomic structure)
  3. 11. the centre part of an atom (atomic structure)
  4. 12. an insoluble salt formed by a chemical reaction (solubility and chemical tests)
  5. 14. an element that is a brown liquid at room temperature (periodic table/ halogens)
  6. 15. a sub-atomic particle with negligible mass (atomic structure)
  7. 18. the group of metals in the centre of the periodic table (periodic table)
  8. 19. the unreactive group on the periodic table (5, 5) (periodic table)
  9. 20. the colour of potassium ions in a flame test (solubility and chemical tests)
  10. 21. a chemical reaction that gives out heat energy (exo/endo reactions)
  11. 22. a separating technique used to separate mixtures by mass (separation techniques)
  12. 25. the atomic number gives the number of........ (atomic structure)
  13. 26. a chemical reaction which takes in heat energy (exo/endo reactions)
  14. 30. the gas formed when alkali metals react with water (alkali metals)
  15. 31. a bond between two non-metals (structure and bonding)
  16. 32. a charged atom (structure and bonding)
Down
  1. 1. a crystalline structure with a high melting point is a giant ionic ..... (structure and bonding)
  2. 2. distillation a separating technique used to separate miscible liquids (separation techniques)
  3. 3. the name given to group 7 of the periodic table (periodic table)
  4. 5. an element that is a pale green gas at room temperature (periodic table/ halogens)
  5. 7. the atomic mass minus the atomic numbers gives the number of .... (atomic structure)
  6. 8. the charge on an electron (atomic structure)
  7. 9. a factor that effects the rate of reaction (rates of reaction)
  8. 10. a factor that effects the rate of reaction (rates of reaction)
  9. 13. the charge on a proton (atomic structure)
  10. 16. something that speeds up a reaction without being used up (rates of reaction)
  11. 17. the maximum number of electrons in the 2nd shell of an atom (structure and bonding)
  12. 23. when lithium reacts with water one of the products is lithium ......... (alkali metals)
  13. 24. an example of an exothermic reaction (exo/endo reactions)
  14. 27. the least reactive alkali metal (alkali metals)
  15. 28. an example of an endothermic reaction (exo/endo reactions)
  16. 29. a bond between a metal and a non-metal (structure and bonding)