Presents the procedures, results, and conclusions of a study designed to determine the relative effectiveness of 4 types of laboratory reports in CHEM Study chemistry. Subjects were 75 eleventh and twelfth grade students randomly assigned to four treatment groups. Dependent variables were the scores on a battery of evaluation instruments which…

Presented is a bench-top demonstration of heating/humidification designed to provide visual confirmation of psychrometric principles outlined in thermodynamics texts. Includes a schematic sketch of the heater/humidifier apparatus, discussion of the six steps involved during the demonstration, and a table of experimental results. (JN)

Described are some new uses and procedures of titration procedures. Topics included are titration in non-aqueous solvents, thermometric titration and catalytic methods for end-point detection, titration finish in organic elemental analysis, and sub-micro analysis and automatic titration procedures. (CS)

A method of estimating the solubilities of drugs in water is reported that is based on a principle applied in quantitative structure-activity relationships. This procedure involves correlation of partition coefficient values using the octanol/water system and aqueous solubility. (Author/MLW)

To help technically skilled deaf science students overcome their language limitations, an instructional module is described which uses cards displaying a laboratory report format along with grammar and style requirements. (CL)