MYP 4 Unit 2 Science - Understanding Matter

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Across
  1. 3. one of the products of the reaction between sodium and water
  2. 6. Unreactive elements that have a full outer shell
  3. 7. What Mendeleev left for the undiscovered elements
  4. 8. The model of the atom described by J.J.Thompson
  5. 10. The number of neutrons in a Fluorine Atom
  6. 11. The group that all have seven outer electrons
  7. 13. The name for a row across the periodic table
  8. 14. The orange coloured halogen
  9. 16. the two letter that can represent relative atomic mass
  10. 18. The name for atoms that have a charge
  11. 20. The noise made in the test for hydrogen
  12. 22. the quality of your teacher's science jokes
  13. 24. The name for group 2 metals
  14. 27. The type of particle fired in the experiment
  15. 28. Rutherfords first name
  16. 29. atoms with the same number of protons but different number of neutrons
  17. 30. The number of electrons in a Lithium atom
Down
  1. 1. Gas used in the blimp in the Hindenberg disaster
  2. 2. The element that was used as a target
  3. 4. The name for group 1 elements
  4. 5. The area of the atom discovered by Rutherford
  5. 9. two atoms joined together in a molecule
  6. 10. The number of electrons in the outer shell of all the alkaline earth metals
  7. 12. Another name for the electron shells
  8. 15. The name for a coloumn running down the periodic table
  9. 17. The electron configuration of a Potassium atom
  10. 19. One of the scientists that did the work
  11. 21. The name given to a very thin layer of metal
  12. 23. The chemical used to test for Carbon dioxide
  13. 25. Discovered the periodic table
  14. 26. One of the scientists that did the work