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20 Multiple choice questions

  1. clays
  2. calcite
  3. cleavage
  4. gold
  5. corundum
  6. The atoms have different numbers of neutrons and the same number of protons.
  7. covalent
  8. muscovite
  9. selectron
  10. plagioclase
  11. quartz
  12. karat
  13. 4 oxygen ions
  14. gold has a higher density and specific gravity than quartz and olivine.
  15. cleavage
  16. They can move relatively easily from atom to atom inside the mineral.
  17. muscovite
  18. luster
  19. Atoms of different elements, having gained or lost electrons, form negative and positive ions that are bonded together by attractive forces between ions with opposite charges.
  20. diamond