Chapter 6 and 7 Crossword

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Across
  1. 3. Group B elements that are displayed in the main body of the periodic table.
  2. 5. Ion with a positive charge.
  3. 6. Group 1A elements.
  4. 9. Ability of an atom of an element to attract electrons when the atom is in a compound.
  5. 10. Group 2A elements.
  6. 11. lowest whole number ratio of ions in an ionic compound.
  7. 12. electrostatic forces that hold ions together.
  8. 13. Mixtures composed of two or more elements.
  9. 14. Elements in Groups 1A through 7A.
  10. 17. number of ions of opposite charge the surround the ion in a crystal.
  11. 18. Ion with a negative charge.
  12. 19. Good conductors of heat and electric current.
  13. 21. Elements in Group 8A,
  14. 22. Ions that are produced when atoms of chlorine and other halogens gain electrons.
  15. 24. Fact to explain why atoms form certain kinds of ions and molecules.
  16. 26. Usually composed of metal cations and nonmetals anions.
  17. 27. Electrons in the highest occupied energy level of an atom.
Down
  1. 1. shows the kinds and numbers of atoms in the smallest representative unit of a substance.
  2. 2. Energy required to remove an electron from an atom.
  3. 4. Nonmetals of group 7A.
  4. 7. Diagrams that show valence electrons as dots.
  5. 8. Appear below the main body of the periodic table.
  6. 15. of the attraction of the free-floating valence electrons.
  7. 16. One half of the distance between the nuclei of two atoms of the same element when the atoms are joined.
  8. 20. Generally has properties that are similar to those of metals and nonmetals.
  9. 23. Poor conductors of heat and electric current.
  10. 25. Atom or group of atoms that have a positive of negative charge.