Reports research that investigates the encoding that students use to develop molecular models at the undergraduate level. Focuses on the translation between symbolic and subatomic representations of molecules. (Contains 31 references.) (DDR)

Introduces a science demonstration on the dissolution of sulfuric oxide emphasizing the concept of acid rain which is an environmental problem. Demonstrates the acidification from acid rain on two lake environments, limestone and granite. Includes safety information. (YDS)

Demonstrates acid rain falling into lakes using vinegar and explores the effects on different types of solids such as chalk, sand, and lime. Includes instructor information and student worksheets. (YDS)

Explains how to manage waste after a classroom laboratory experiment which generally has the potential to generate large amounts of waste. Focuses on pollution prevention and the selection processes to eliminate or minimize waste. (YDS)

Describes a sea-water analysis project that introduces qualitative and quantitative analysis methods and laboratory methods such as gravimetric analysis, potentiometric titration, ion-selective electrodes, and the use of calibration curves. Uses a problem-based cooperative teaching approach. (Contains 24 references.) (YDS)

Presents a problem solving approach which follows a pathway allowing students to visualize patterns, have an overview of the problem, and clarify the connections. Investigates the quality of student constructed pathways and reports greater success with the approach on difficult problems rather than easy ones. (Contains 13 references.) (YDS)

Points out the important use of textbooks and their ancillary resources in lower-division chemistry courses and the scientific misconceptions found in them. Introduces the TextRev Project which is a new resource for data collection and analysis. Investigates how first and second year chemistry students use and value their textbooks and their study…

Defines the terms "mole", "mole per liter", and "molar" in chemistry contexts and discusses these measurement units, SI units, and their importance in chemistry. (YDS)

Introduces chemistry laboratories in which students have the opportunity to conduct laboratory projects in multiple sessions that promote planning, thinking, technical performance, and responsibility. Defines the process of experimentation and its applications to science laboratories and describes successful project applications. (YDS)

Presents a mystery based on the well-known characters, Sherlock Holmes and Dr. Watson. Emphasizes qualitative inorganic analysis, laboratory observations, and oxidation-reduction processes. (Author/YDS)

Presents a scenario of a plane crash and asks students to identify passengers based on chemical compounds and passengers' health conditions. (YDS)

Presents a science activity on consumer chemistry in which students explore artificial flavors that are commonly used in foods, such as isoamyl acetate and methyl salicylate. Includes instructor information and a student worksheet. (YDS)

Presents a puzzle using chemical element clues leading to animal names. (YDS)

Uses letter matrix puzzles to teach about chemical symbols. (YDS)

Introduces an educational terminology puzzle consisting of a fill-in-the-blank paragraph format with 15 letters square. (YDS)