Atoms and Bonding

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Across
  1. 3. a chemical ___________ is a combination of symbols that shows the ratio of elements in a compound
  2. 5. means that metals can be bent easily and pulled into thin strands or wires
  3. 7. a covalent bond in which electrons are shared equally
  4. 9. an ionic ____________ consists of positive and negative ions
  5. 10. an orderly, three-dimensional arrangement of ions
  6. 13. this element has two electron levels and five valence electrons
  7. 15. ions that are made of more than one atom
  8. 17. a mixture made of two or more elements, at least one of which is a metal
  9. 20. a nitrogen molecule has one ________ bond
  10. 21. type of bond that usually forms when a metal combines with a nonmetal
  11. 23. there are this many magnesium ions to chloride ions in magnesium chloride
  12. 24. iodine would have this many dots around it for its electron dot diagram
  13. 25. magnesium has this many electron levels
  14. 27. most molecular compounds do not _______ electric current
  15. 28. those electrons that have the highest energy level
Down
  1. 1. this element has four electron levels and two valence electrons
  2. 2. an oxygen molecule has one ________ bond
  3. 4. bond that forms as a result of the attraction between a positive metal ion and the many electrons surrounding it
  4. 6. this element has five total electrons
  5. 8. this tells you the ratio of elements in the compound
  6. 11. bond that forms as a result of the attraction between positive and negative ions
  7. 12. able to be rolled into thin sheets
  8. 14. when an atom gains an electron, it becomes a ________ ion
  9. 15. in naming ionic compounds, the name of this ion comes first
  10. 16. shiny and reflective
  11. 18. a neutral group of atoms joined by covalent bonds
  12. 19. this molecule is an example of a polar covalent bond
  13. 22. an atom or group of atoms that has an electric charge
  14. 26. ionic compounds have ________ melting points