CHEMISTRY 



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CHEMISTRY 



OUTLINE AND QUESTIONS ON CHEMISTRY 



Outline 



I. What It IN 



(1) "The science of the composition of 

 substances" 



(2) Its wonderful achievements 



II. ltd Development 



(1) Reasons for the beginning of such a 

 science 



(2) Alchemy 



(a) Its purpose 



(b) Its methods 



(3) The real science 



(a) Its connection with medicine 



(b) Discovery of fundamental prin- 

 ciples 



III. Branches 



(1) Organic chemistry 



(a) The carbon compounds 



(b) Not necessarily a study of living 

 organisms 



(2) Inorganic chemistry 



(a) Lack of sharp distinctions 



(3) Special classifications 



(a) Physiological chemistry 



(b) Agricultural chemistry 



(c) Electro-chemistry 



(d) Industrial chemistry 



IV. Subject Matter 



(1) Elements 



(a) What an element is 



(b) Number 



(c) Occurrence in nature 



(d) Old theories about element* 



(e) The electron theory 



(2) Chemical compounds 



(a) Distinguished from mechanical 

 mixture 



(b) Atoms 



(c) Chemical affinity 



(d) Combination affected by outside 

 forces 



1. Heat 



2. Electricity 



3. Light 



4. Mechanical force 



(e) Laws of combination 



V. Chemical Symbol* 



( 1 ) Method of naming elements 



( 2 ) Method of naming compounds 



Questions 



Why is the study of chemistry of increasing importance to-day? 



From the point of view of chemistry, what is the difference between air and 

 water? 



Mention two substances which are really compounds but seem like simple 

 substances. 



In the formula H2S04, what do the small figures indicate? What can you tell 

 about the composition of the substance for which the formula stands? 



What curious theory did old-time chemists hold as to the origin of disease? 



What is meant by a "chemical compound"? 



Give the chemical symbols for two inorganic substances commonly present on 

 the dinner-table. 



What extraordinary relationships has chemistry discovered between substances 

 that are apparently widely separated? 



Why can brass be decomposed, while copper, which seems not unlike it, cannot be? 



If you heat iron filings and sulphur in a test tube, can you then draw out the 

 iron with a magnet? 



What element, in some compound or other, is present in every living thing, so 

 far as is known? 



Why should a soap-factory have a chemist among its employees? 



How large a proportion of the earth's crust is made up of eight elements? What 

 are they? 



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