Ch. 10 Selected Nonmetals and their compounds

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Across
  1. 2. Gas obtained from heating rocks at high temperatures, exists as white or red allotropes, used in pyrothecnic material
  2. 4. One of the principal gas component ​of combustion reaction, produced and used in biochemical reactions such as photosynthesis and cellular respiration, used for steel manufacture and antiseptic medicine, two allotropes known
  3. 6. Noble gas used in color ligth signs
  4. 7. Most abundant gas in the universe, highly reactive, three known isotopes, used to synthethize ammonia
  5. 9. Noble gas used for filling balloons or low temperature coolants
  6. 10. Noble gas used in cancer treatment
  7. 13. Halogen naturally produced by the thyroid gland, found in table salt and used as an antiseptic in surgical procedure
  8. 14. Halogen used in regriferants and dental hygiene, prepared by passing an electric current n molten material
  9. 15. No combined compounds are found in nature, have low reactivity but high ionization energy due to complete valence electrons in outer shell
  10. 17. type of chemistry that describes the properties, uses, reactions, and preparation processes of chemicals
  11. 19. Combined compounds are found in nature, highly reactive and form salts with metals, mostly founf as diatomic mlecules (X2)
  12. 20. Noble gas used in photographic flash
Down
  1. 1. Noble gas used in high intensity flashlights bulbs
  2. 3. all of the elements described in this chapter are characterized by being
  3. 5. Halogen that is used as special ingredient of pharmaceutical sedatives, and water purification
  4. 8. Most abundant gas in the atmosphere used in plants' and bacteria atmospheric cycle, used in ammonia production and as the main components of fertilizers
  5. 11. allotrope that protects us from the UV rays of the sun
  6. 12. Noble gas that is used for filling incandescents light bulbs and fluorescent lamps
  7. 16. Nonmetal that uses the term thio- to identify it, is extracted naturally from the earth and can be found as crystals in minerals, naturally pale yellow color
  8. 18. Halogen that is the main component of PVC, used in bleaches and disinfectants, and crop insecticides