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Pre ap chem ch. 7 Test

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4 Written Questions

4 Multiple Choice Questions

  1. mixtures composed of two or more elements, at least one of which is a metal
  2. compounds composed of cations and anions
  3. the number of ions of opposite charge that surround each ion in a crystal
  4. States that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons

3 True/False Questions

  1. valence electronsThe electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds.


  2. metallic bondsthe force of attraction that holds metals together; it consists of the attraction of free-floating valence electrons for positively charged metal ions


  3. halide ionsthe ions that are produced when atoms of chlorine and other halogens gain electrons


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