Presented is an experiment in which students recover almost 90 percent of the original lead chloride thus saving on costs of chemicals and disposal. Included are experimental procedures and a discussion of typical results. (CW)

Discusses sources, classroom demonstrations, gamma ray spectroscopy, and hazard assessments of radioactive product use in the classroom and home. (MVL)

Lists requirements of hazardous-substances legislation as it pertains to science laboratories with a summary of obligations under the Hazardous Substances Compliance Standard for manufacturers, importers, suppliers of hazardous substances, employers or principals, and employees. (AIM)

Details how a lead safety project funded in the Toyota Tapestry Grant program provided students with the resources to test for and discover lead present in their recently renovated school. Discusses how the lead safety project played out across grade levels within the school. (DDR)

The goal of this K-12 science safety resource is to bring together information needed by administrators, planners, teachers and support staff to help them make sound decisions regarding science safety. The document identifies areas for decision making and action at a variety of levels. It supports planning and action by providing information on…

Discusses the Occupational Safety and Health Administration's (OSHA's) Laboratory Safety Standards as the major driving force in establishing and maintaining a safe working environment for teachers and students. (Author)

A 2-week unit on toxic chemical waste disposal is used in a physical science course for nonscience majors. Descriptions of the unit, supplementary student activities, and student library project are provided. Also provided are selected student responses to a five-question survey on the unit. (JN)

Polychlorinated biphenyls (PCBs) are compounds that were once used as insulators in electrical transmission lines and in the production of polymers. Each PCB differs by the quantity and location of the chlorine atoms. PCB production was halted in 1977 due to their potential toxicity, but the chemicals are still found in the environment due to…

An important part of the science classroom involves teaching students how to safely use tools, techniques, and procedures. As emphasized in the National Science Education Standards, "safety is a fundamental concern in all experiential science" and teachers must "teach students how to engage safely in investigations inside and outside the…

Describes the use of practice weighings and handling of fluorescent compounds to assist in teaching students safe-handling techniques. (PR)

Describes simple, efficient techniques for treating hazardous chemicals so that nontoxic and nonhazardous residues are formed. Discusses general rules for management of waste chemicals from school laboratories and general techniques for the disposal of waste or surplus chemicals. Lists specific disposal reactions. (CW)

Twelve papers focusing on various aspects of teaching chemistry to the nonchemist are presented. Includes details of courses designed around specific topics and/or needs (such as art hazards), use of field trips, issues related to the problem of explaining technical ideas to lay persons, and other topic areas. (JN)

Presents discussions on sources, health impacts, methods of analysis as well as lengthy discussions of lead, nitrates, and atrazine as related to water pollution and the interdisciplinary nature of the modern chemistry curriculum. (DKM)

In 1986, Lake Nyos, a volcanic lake in Cameroon, released a huge amount of carbon dioxide gas, killing over 1,700 people in the surrounding area. This case study, developed for use in a limnology or aquatic biology course, explores that event, introducing students to concepts relating to lake formation, thermal stratification, and dissolved gases.…

Lab safety begins with the teacher. Teachers must make learning how to be safe an integral and important part of their professional development and work. Teachers who are unfamiliar with laboratory instruction should take whatever steps necessary to prepare for the unique challenges associated with safety in conducting laboratory investigations…