Excerpt from Qualitative Analysis: As a Laboratory Basis for the Study of General Inorganic Chemistry
This text presents the course of instruction given by the author to the freshman classes at the University of California where the exigencies of vocational courses render it impracticable for a large number of students to devote more than one year to general inorganic chemistry and to qualitative analysis as well. Therefore, the scheme of qualitative analysis is made to serve as a means of correlating the apparently independent experiments of general chemistry. Thus, while the end in view is primarily the imparting of a knowledge of the general subject, familiarity with analytical methods is obtained. The course presupposes good chemical training in the secondary schools, many of its briefer statements being in the nature of a review rather than of first presentation. No attempt has been made to emasculate the work by eliminating the consideration of more difficult points. On the other hand, the tests for individual elements have been varied in order to familiarize the student with as many significant reactions as possible.
In the opinion of the author, instruction in science should endeavor to equip the student with principles rather than facts and, what is of still greater import, it should train him in the use of these principles and in the application of them in explaining the phenomena of general experience. The acquisition of relatively large numbers of facts or the memorizing of printed rules and laws is a matter of comparatively easy accomplishment. The ability to analyze a situation and to recognize the underlying principle comes less readily. Still more difficult of acquirement is that mental habit which consistently seeks the explanation of the unfamiliar by means of the well-known. In the author's experience, furthermore, students know facts but lack the perspective which gives the appreciation of relative values. Their facts are for the most part individual units, like so many loose beads without any connecting thread by means of which the whole may be viewed as a unit and the relation of the individuals, each to the other, recognized. From certain of the many books at present on the market a good student may learn much chemistry; but the author has found it necessary to supply in lecture form the correlating factors and to keep pointing out the application of general principles to cases not less typical than the stereotyped illustration discussed in the text.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. Это и многое другое вы найдете в книге Qualitative Analysis (William Conger Morgan)