620 MAN IS MASTERING HIS MATERIAL WORLD 14. What is an amino acid? 15. What is the nature of a protein? 16. What is a fat? 17. How is a soap made from a fat? What is the process called? What byproduct is obtained in this process? What is a soap? 18. What is polymerization? 19. What group is characteristic of ketones? 20. What is an ether? 21. What four compounds may be prepared by the action of chlorine on methane? 22. What is meant by ortho, meta, and para aromatic compounds?
UNIT IX CREATIVE CHEMISTRY HAS CONTRIBUTED GREATLY TO MANS PHYSICAL PROGRESS INTRODUCTION TO UNIT IX Chemistry plays a vital part in man's mastery of his material world, because, as we learned in a previous unit, it is the science which deals with the transformations of matter. It is the purpose of this Unit not only to provide an appreciation of the accomplishments of chemistry in producing better things for better living but also to show how essential chemical research is to the success of industry in this modern world. The picture to be presented is very incomplete because, in every field of science, the story of accomplishment always leads to unsolved problems. Chemistry is a growing, maturing science. It is bringing profound changes to man's way of living. No one can understand the impact of Science on civilization or be prepared to make an intelligent adjustment to these changing conditions without an appreciation of what chemistry has done and is doing to provide for old necessities and to create new necessities of life. What are the raw materials used to produce "better things for better living"? What are the raw materials which are increasing in their importance in the synthesis of materials unlike any ever found in nature? To what extent is the United States endowed with essential raw materials? To what extent should we be concerned about the conservation of these raw materials? Such are some of the vital topics considered in this Unit. 621