prc.grotn miikc-. nc, nuwrion ut rmcritm 8rder + I the atudenr has 1,) 11;twre:d .ttid ~ t ~ d v r > t c~hc. ~ \ h:t~etic d s theory i n i l i v Id, manual. No numerical output is produced excepta measure of the relative significance of the linear regression (7). Figure 3 shows plots of typical data. In most cases, the student will find plot (h) is the nearest to a straieht line. Faced with clear evidence of the " eood oualitv u . " of their results, students feel compelled to work a t the calculations until thev obtain eood numerical values for the rate constants. A bon;s is thatitudents who obtain results so poor that they cannot determine reaction order are usually easily persuaded to repeat the experiment before wasting time on fruitless calculations. This program provides a useful int,ermediate step between the tutorial programs beginning chemistry students encounter and the data analysis done independently by juniors and seniors. It convinces students that the computer can be a useful tool and not just an extraneous hurdle to passing the course. Program SNlSN2 is an interactive BASIC program with 192 statements including 18 comments. It is written for a Tektronix 4051 computer but uses no special features of the 4051 except plotting commands. Program requires 12K of memory. Documentation available for $2 postage and handling. Documentation includes listing and sample input and output; instructions to students are provided by the program. Program also available on your 4051 cassette for $4 postage and handline (includine documentation). Make checks payable to Dry Paul A. ~ i h o s ah t the Depa;tment of Chemistry, Mount Holyoke College, South Hadley, MA 01075.
Computer-Assisted Instruction in General Chemistry Gary Shapira and Joseph 6. Justice, Jr. Emory University Atlanta. GA 30322 At Emory University the general chemistry curriculum has been supplemented by a group of interactive BASIC programs accessed by the program GENCHEM. Through GENCHEM students can develop their understanding and ahility to use chemical concepts in hoth general chemistry and quantitative analysis. The instruction in general chemistry consists of 368 multiple choice problems selected from previous examinations. These mntliple choice questions are organized in 23 topics in general chemistry. The major emphasis is on stoichiometry, periodic properties, acids and bases, oxidation and reduction, atomic structure, the chemical bond, equilihria, and properties of matter. The material for quantitative analysis consists of both multiple choice and numerical problems; they are keved to "Quantitative Analvsis" hv Dav and Underwood h,. Tlw W4-tnhiplc < lioice pri,bltm+
