Test: Unit 2

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Across
  1. 3. The amount of nuclear charge _____________ across a period.
  2. 5. A measure of the ability of an atom to attract electrons; how much an element wants to steal an electron.
  3. 6. Which is stronger: intermolecular or intramolecular?
  4. 13. Attractive forces between molecules are called ____________________.
  5. 15. The uneven distribution of electrons usually occurs when the molecule has a(n) ______________________ shape.
  6. 18. A negative ion produced when an element gains electrons.
  7. 21. This is the weakest IMF.
  8. 23. Electrons are _________________ in the formation of an ionic bond.
  9. 24. IMF's determine what types of properties?
  10. 27. In nonpolar covalent bonds the electrons are shared __________________.
  11. 29. Type of bonding between a metal and a nonmetal.
  12. 30. The higher the boiling point the ____________ the hydrocarbon chain.
  13. 31. As you go across a period the radius of the atom gets _______________.
  14. 33. Electrons are _______________ in the formation of a covalent bond.
  15. 34. Name:Na3PO4
  16. 35. Which element on the periodic table has the highest electronegativity.
  17. 37. These types of molecules (H2, Cl2, N2, Br2, etc)are called _____________ molecules
  18. 39. When two identical nonmetals bond it creates a ________________ covalent bond.
  19. 40. Name:B2Br4
  20. 41. Low IE means your electrons are ___________ to steal.
Down
  1. 1. This element on the periodic table has the smallest radius.
  2. 2. Name:PCl3
  3. 4. The energy required to remove or steal an electron.
  4. 7. These forces occur between polar molecules.
  5. 8. This element is the most reactive nonmetal on the periodic table.
  6. 9. Substances held together with hydrogen bonds will have a _______________ boiling point.
  7. 10. This occurs between Hydrogen and Oxygen, Nitrogen and fluorine.
  8. 11. This element of the periodic table has the largest radius.
  9. 12. Name:CoCO3
  10. 14. The positive ion that is written first in a chemical formula.
  11. 16. As you go down a group the radius of the atom gets _____________.
  12. 17. Water has a ________________ geometric structure.
  13. 19. Forces holding a molecule together are called ________________________.
  14. 20. All compounds are called _____________, but not all molecules are compounds.
  15. 22. Which element experiences more shielding: Be or Ba?
  16. 25. As you go across a period the number of energy levels is _________________.
  17. 26. Type of bonding between a nonmetal and nonmetal.
  18. 28. The most reactive metal tends to __________________ electrons most easily.
  19. 32. This intermolecular force occurs between non-polar molecules.
  20. 36. The nuclear charge gets ______________ as you go down a group.
  21. 38. The number of electrons in the last energy level is called the ___________ electrons.