AQA Chapters 1 & 2 Atomic Structure and Periodic Table

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Across
  1. 2. Can be used to separate a mixture of liquids using their boiling point
  2. 5. A positive sub-atomic particle
  3. 7. The mobile phase in chromatography
  4. 8. Proved that electrons orbit on fixed energy levels
  5. 10. A solid that can dissolve
  6. 12. Where electrons are found in an atom
  7. 15. The ___________ metals are found between groups 2 and 3
  8. 17. A way to separate a dissolved solid from a solution
  9. 19. Mendeleev left these in his periodic table
  10. 20. A row in the periodic table
  11. 21. The stationary phase in chromatography
  12. 24. The type of substance that produces one spot in chromatography
  13. 25. The name for the group 0 elements (5,6)
  14. 27. Discovered the electron
  15. 29. Group 1 metals get _______ reactive down the group
  16. 30. The number of electrons that the second and third shell can hold
  17. 31. Discovered the neutron
  18. 33. A solid that cannot dissolve
  19. 34. Group 1 elements are known as the __________ metals
Down
  1. 1. Group 7 elements are known as the _______________
  2. 3. The part of the atoms that contains protons and neutrons
  3. 4. A version of an element with a different number of neutrons
  4. 6. A column in the periodic table
  5. 9. Discovered the nucleus
  6. 11. The period number of an element tells you this (6,2,6)
  7. 13. Group 7 elements get _______ reactive down the group
  8. 14. An element forms this when it loses or gains electrons
  9. 16. A neutral sub-atomic particle
  10. 18. The gas made when sodium reacts in water
  11. 22. The solvent must be ________ the base line in chromatography
  12. 23. A way to separate a solid from a liquid
  13. 24. Used to draw a base line in chromatography
  14. 26. A negative sub-atomic particle
  15. 28. Elements in the periodic table are arranged in order of __________ (or proton) number
  16. 32. Full inner shells have this effect on the attraction of the nucleus