ข้อมูลทรัพยากร

เนื้อหาย่อ : The CHEM Study course approaches the study of Part III. Investigations of Chemical Reactions emistry as an experimental science. It is a boratory-centered course which: Illustrating Important Principles. (Thirteen experiments) features experiments which will permit you to Part IV. Theoretical Concepts. Atomic Struc- make your own discoveries of the regularities ture. Chemical Bonds. Structure and and principles which unify chemistry and make Properties. (Four experiments) it easier to understand, Part V. Application of Chemical Principles to emphasizes the making of careful observations Descriptive Chemistry. (Fifteen ex- quantitative measurements under con- periments) trolled experimental conditions, Familiarize yourself with each experiment you stresses the preparation of well-organized tables for recording data and the results of calcula- are to perform before coming to the laboratory. Prepare tables for recording data and calculations tions so that you can more readily make deduc- tions and recognize the regularities which exist, in a blank laboratory notebook. Read carefully the directions on page ix for writing laboratory s challenging discussion questions which reports. The introductory section of the manual ill help you to apply the principles observed contains two full page illustrations of laboratory the experiments to new situations. apparatus you will use. Read carefully the labora- The Textbook discussions are closely meshed tory instructions and safety precautions on page the laboratory work. Each chapter in the ix. Tetbook is preceded by one or more experiments Gain self-reliance by working alone on an ex- provide an experimental background for periment unless directed otherwise. Use your in- dhe topics discussed. As you learn to recognize and genuity and common sense. You will find that ase the important principles you will be in a better there is always opportunity for logical and imag- position to appreciate and understand the theories inative thinking. have been proposed to explain the regulari- chemistry. Illustrated sections on lighting and adjusting a laboratory burner and manipulating glass tubing e organization of the CHEM Study course is will be found in Appendixes 1 and 2. Appendixes d by the five major divisions into which the 3, 4, and 5 deal with the metric system, experi- ents have been classified: mental errors, and a brief review of some mathe- Pat I. Observation and Interpretation. Pre- matics which will be useful to you in making cision of Measurement. (Six experi- calculations. Appendix 6 contains additional ex- ments) periments which you may perform at the option of Rat Il. An Introduction to Chemistry. The your teacher. Many experiments contain sugges- Mole Concept. Avogadro's Hypothe- tions for additional investigations which may be sis. Gases. Solutions. (Eight experi- undertaken with the permission of your teacher. Remember that your laboratory work is the ments)