Chapter_21IM - Chapter 21 Nonmetallic Elements and Their...

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Chapter 21 Nonmetallic Elements and Their Compounds This chapter is a general review of the nonmetallic elements and their compounds. Upon completion, your students should be able to: 1. List ten nonmetal compounds that are gases at room temperatures. 2. Write balanced equations that describe three different methods for the production of hydrogen gas. 3. List three broad types of hydrides and describe the physical characteristics of each. 4. Name the three isotopes of hydrogen and indicate the number of protons and neutrons found in the nucleus of each. 5. Describe two methods for the separation of H 2 O and D 2 O. 6. Define hydrogenation and describe the importance of this process in the food industry. 7. Describe what is meant by the hydrogen economy and list various approaches being examined for the production and storage of hydrogen. 8. Name two allotropes of carbon and indicate which one is most thermodynamically stable at room temperature. 9. State why acids should never be mixed with metal cyanides without proper ventilation. 10. Identify the property of solid carbon dioxide that is responsible for it to be referred to as dry ice. 11. Write the chemical formula for ammonia and hydrazine and list the principle use of each. 12. Compare the physical effect of N 2 O and NO 2 on humans. 13. Describe how aqua regia is prepared and state a common use of this solvent. 14. Explain the difference between the molecular structure for white phosphorous and red phosphorous. 15. Write the formula for phosphoric acid and identify it as being either a strong or weak acid. 16. State the oxidation number of oxygen in oxide, peroxide and superoxide. 17. Describe the change in acidic character of oxides going from left to right for third-period elements.
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18. List beneficial uses of ozone. 19. Name and give the formula for the world’s most important industrial chemical. 20. List four ways in which the chemistry of fluorine differs from the rest of the halogens. 21. Describe the chlor-alkalic process for the production of chlorine gas and name a potential
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Chapter_21IM - Chapter 21 Nonmetallic Elements and Their...

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