Y11 Chemistry

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647
Across
  1. 1. Atoms of an element with the same number of protons and electrons but different number of neutrons.
  2. 4. An insoluble solid formed from 2 solutions reacting
  3. 6. Different physical forms of the same element in the same state
  4. 9. Removing salt from seawater.
  5. 11. In a metal, these slide over each other without disrupting the bonding.
  6. 14. Positive particle in an atom
  7. 16. Another term for free electrons
  8. 17. A salt that is formed when sulfuric acid reacts with another chemical element.
  9. 18. A block of metals, usually giving rise to coloured compounds
  10. 22. Group 2, The alkaline _____________ metals
  11. 24. Produces hydrogen ions when dissolved in water
  12. 25. Word used to describe the structure of ionic and metallic substances
  13. 26. A mixture designed for a useful purpose
  14. 27. Produced when the hydrogen in an acid is replaced by a metal
  15. 28. The number of protons is the _________________ number
  16. 30. Water that is safe to drink
  17. 33. When a more reactive halogen takes the place of a less reactive one.
  18. 36. Scientist responsible for the development of the periodic table
  19. 37. A charged particle
  20. 38. A narrow glass tube used for measuring liquid or for moving small amounts of liquid from one place to another, particularly 25cm3
  21. 40. Most of an atoms mass is here
  22. 41. Bonding between a metal and non-metal
  23. 43. Method of potassium or sodium salt production
  24. 44. A small mammal, but also the name given to approx 6x10e23 particles
  25. 46. __________________ copper(II) sulfate, used to test for water
  26. 47. Diamond and graphite have this type of structure
Down
  1. 2. The colour of bromine in water
  2. 3. The type of bond found within metal
  3. 5. Colour of solutions formed by group 1 and 2 compounds
  4. 7. A metal compound that reacts with acid to form salt, water and carbon dioxide
  5. 8. Chlorination kills these, when making water safe to drink
  6. 9. Method to separate and retain both the solute and its solvent - simple ___________________
  7. 10. A soluble base
  8. 12. A bond made from a shared pair of electrons, between non-metals
  9. 13. A type of covalent structure, small, with a definite start and end
  10. 15. Used to measure and record a volume of liquid very accurately, with a tap
  11. 19. Solution of sodium or ammonium _________________ used to identify metal ions
  12. 20. Total number of protons and neutrons is the ________________ number
  13. 21. General name for liquid that passed through the filter paper
  14. 23. The group of elements - fluorine, chlorine, bromine, iodine, and astatine.
  15. 29. A very small particle that has no electrical charge
  16. 31. Metals get more reactive down their group as the outer ____________ gets further from the attractive nucleus
  17. 32. Elements with the same number of electrons in the outer shell are in the same ________________
  18. 34. Smaller than an atom, describes the particles that make up an atom.
  19. 35. An element that forms diamond, graphite and graphene.
  20. 39. A type of model for the atom, based on a pudding.
  21. 42. Method to separate coloured dyes for analysis - paper ______________________
  22. 45. A positively charged ion.