Elements & The Periodic Table CW 2

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Across
  1. 6. when an element has more than one possibility for the number of neutrons
  2. 8. amount of matter in an object
  3. 10. Elements that are good conductors of electricity and thermal energy and are often solid at room temperature.
  4. 12. a group of two or more atoms held together by chemical bonds
  5. 14. anything that has mass and takes up space
  6. 15. the ability for metal to be hammered, pressed or rolled into thin sheets
  7. 17. the amount of mass a material has in a given volume
  8. 18. the ability of an object to carry electric currents
  9. 19. substances that can conduct electric currents under some conditions but not under other conditions
  10. 20. force between atoms or groups of atoms
  11. 24. an element that lacks most of the properties of a metal
  12. 26. Elements arranged in vertical columns of the periodic table that share the same properties.
  13. 28. the basic particle from which all elements are made
  14. 32. a pure substance that cannot be broken down into any other substance by chemical or physical means
  15. 33. elements in group 1 of the periodic table that are characterized as metals and only have one valence electron
  16. 34. A positively charged subatomic particle located at the center of an atom.
  17. 35. The average mass of the nucleus of that element.
  18. 36. the elements in group 16
  19. 37. An abbreviation for the name of an element on the periodic table.
  20. 38. located in the outermost shell of an atom
  21. 39. the elements in group 15
  22. 40. elements that have some properties of metals and some properties of nonmetals
Down
  1. 1. the elements in group 13
  2. 2. elements in group 2 of the periodic table that are characterized as metals and only have two valence electrons
  3. 3. someone who studies chemistry
  4. 4. elements in group 18 of the periodic table that share similar properties such as a full outer electron shell
  5. 5. elements in group 17 of the periodic table that need only one electron to complete its outer electron shell
  6. 7. the ability of an object to transfer heat
  7. 9. matter with a composition that is always the same
  8. 11. scientist that discovered a set of patterns that applied to all elements
  9. 13. A subatomic particle with no charge located at the center of an atom.
  10. 16. The number of protons in the nucleus of each element.
  11. 21. the elements in group 14
  12. 22. the ability for metal to be drawn into wires
  13. 23. the shine of a metal
  14. 25. Characteristics of elements that help to identify what they are.
  15. 27. Repeating rows of the periodic table that demonstrate patterns of how elements are arranged.
  16. 29. the elements located in Group 3 through 12
  17. 30. the number of valence electrons for each element in Group 1
  18. 31. A subatomic particle of an atom that is negatively charged and orbits the nucleus extremely fast.
  19. 41. number of valence electrons for each element in Group 2