Addresses pedagogical problems of science in ethics and ethics in science with reference to beginning courses in chemistry and philosophical ethics, citing experiences in attempting to combine the two fields. (Author)

Reviews developments in chemistry curriculum/instruction, providing lists of chemistry cassettes, monographs, educational literature from the Royal Society of Chemistry, new teaching packages, and course materials for science in society. Extends information presented in a previous article (EJ 235 051) appearing in this journal. (JN)

Describes a computer program (FORTRAN and APPLESOFT) demonstrating the effect of copolymer composition as a function of conversion, providing theoretical background and examples of types of information gained from computer calculations. Suggests that the program enhances undergraduate students' understanding of basic copolymerization theory.…

Discusses: (1) how mole concept is defined/used in textbooks; (2) development and administration of a multiple-choice test to secondary school pupils (N=783) in Bologna and the surrounding district; and (3) results of the diagnostic examination, focusing on student mistakes and misconceptions. (Author/JN)

Describes the use and analysis of pretests/posttests for assessing instructional consequences in introductory college chemistry. Results from two studies (N=58 and N=136) are discussed as well as the use of pretests/posttests in helping instructors to identify course topics which need attention and improvement. (Author/JN)

Background information, procedures, and materials needed are provided for an experiment in which acetone is produced from 2-propanol. The experiment does not use magnetic stirring, avoids the necessity for exhaustive extractions with ether, and produces a 60-percent yield of redistilled acetone within a two-and-one-half-hour laboratory period.…

Following brief highlights of the development of organic chemistry, surveys undergraduate organic chemistry textbooks published in English since 1887 to see how the presentation of the subject has changed over the last 100 years. Coverage is restricted to texts designed for courses lasting one year or more. (Author/JN)

Procedures for two demonstrations are provided. The solubility of ammonia gas in water is demonstrated by introducing water into a closed can filled with the gas, collapsing the can. The second demonstration relates scale of standard reduction potentials to observed behavior of metals in reactions with hydrogen to produce hydrogen gas. (Author/JN)

Discusses several accidents which occurred during secondary school science/chemistry laboratory experiments, offering suggestions for conducting safe experiments. Indicates that all experiments should be planned using the safest chemicals and safest reactions illustrating a concept, and that audiovisual aids should be used if no safe experiment is…

Encouraging scientific thinking through open-ended experiments, allowing students access to common chemical instrumentation, and introduction to laboratory techniques are goals of a high school science laboratory program. Course content (general, inorganic, and organic chemistry), limitations, and course evaluation are discussed. (Author/JN)

Describes a simple, relatively inexpensive, and easily implemented approach for introducing visually handicapped students to chemical instrumentation via experiments on operational amplifiers as examples of some of the electronic building blocks of chemical instrumentation. The approach is applicable to other chemical instruments having electrical…

Procedures are provided for separating the principal metalloproteins (albumin, ceruloplasmin, and transferrin) from plasma using column chromatographic techniques. The experiment can be completed in two separate three-hour laboratory periods during which column chromatography is illustrated and the effect of pH on charge and affinity of a protein…

Experimental procedures and typical student data/results are provided for an experiment determining the sodium (parts per million) in salt substitute with an error of a few percent. Problems encountered with the technique are addressed. (Author/JN)

Background information procedures and results are provided for a diffusion (permeation) experiment using an inexpensive instrument and performed during a single three-hour laboratory period. (JN)

Uses an example of literature error to illustrate several principles often difficult to present to chemistry students. Indicates how the significance of previously reported experimental results is changed when previously reported assumptions are replaced by an alternative set of assumptions leading to a self-consistent interpretation of the…