Describes a study that explores the instructional influence of presenting pictures at the molecular level when introducing chemistry concepts and solving chemistry problems. Explores the effect of the pictures on students' conceptions and problem-solving abilities. Contains 59 references. (DDR)

A study compared response strategies and error patterns of 272 college freshmen on chemistry test items in multiple choice and constructed response formats. Analysis of test data indicated no significant difference in solution strategies used or types of errors committed across test formats. However, interviews with 21 participants revealed…

Discusses questions to consider as chemistry libraries develop new information storage and retrieval systems. Addresses new integrated tools for data manipulation that will guarantee access to information; differential pricing and package plans and effects on libraries' budgeting; and the changing role of the librarian. (LRW)

Explains structurally based therapeutic evaluation of drugs, which uses seven therapeutic criteria in translating chemical and structural knowledge into therapeutic decision making in pharmaceutical care. In a Creighton University (Nebraska) medicinal chemistry course, students apply the approach to solve patient-related therapeutic problems in…

A study at the University of Transkei (South Africa), a historically black university, examined whether student efforts to work through class assignments promoted academic achievement. Results showed that of 65 subjects, those who completed the assignments regularly were the highest performers. The latter group generally failed in tests but showed…

Describes a study of 32 University of Transkei (South Africa) freshmen's conceptualization of "limiting reagent," a basic concept in chemistry, based on student responses to two written test questions and clinical interviews. Results indicated that a high percentage of students had misconceptions and could not apply the concept…

Four applications of microcomputers in the chemical laboratory are presented. Included are "Mass Spectrometer Interface with an Apple II Computer,""Interfacing the Spectronic 20 to a Computer,""A pH-Monitoring and Control System for Teaching Laboratories," and "A Computer-Aided Optical Melting Point Device." Software, instrumentation, and uses are…

Described is a laboratory interface system including hardware, software, and student activities. Student use of this system is reviewed stressing experimental design skills and student-designed experiments. (CW)

This article focuses on the nature of acidity in pulp paper as found in comic books and library collections. Some of the various factors that contribute to the deterioration of paper are considered from a chemical perspective. (CW)

The construction of a model that is useful for teaching stereochemistry from a sealed empty envelope is described. Detailed steps with accompanying diagrams are given. (CW)

The construction of a model that is useful for teaching stereochemistry from two sealed empty envelopes is described. Detailed steps with accompanying diagrams are given. (CW)

Provides a two hour experiment using direct gravimetric methods to determine solubility constants. Provides methodology and sample results. Discusses the effect of the common ion on the solubility constant. (MVL)

Explores the applicability of Mulliken's united atom model to a variety of chemical systems and demonstrates its value as a teaching tool. Considers applications to first row hydrides, compounds of the first and second periods, heavy atoms, and cluster systems. (MVL)

Presented is a study designed to describe the characteristics, goals, and instructional strategies of high school science teachers in Israel. The study also attempted to identify factors which explain differences between teachers of different science content and provide explanations for the differential implementation of curricula in biology,…

Discussed are various ways that microcomputers can be interfaced to laboratory equipment to control laboratory applications. A general overview is given including advantages and disadvantages of different interfaces. Different software tools currently available are examined. (CW)