Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes. In Chapter 5, students learned how the process of dissolving ...

In the days before a snowstorm, drivers across Connecticut may notice the white streaks of pretreatment along the roads, ...

Calcium chloride is the most effective and least expensive cold weather accelerator for concrete. But its use may be limited by building codes or prohibited by some specifications. Contractors then ...

Power plants often produce wastewaters that contain salts, such as those from wet gas scrubbing, coal pile run-off, and leachate from gypsum stacks. Evaporation of those liquid wastes in a modern zero ...

Food scientists, agronomists, and chemists frequently need to know the amount of calcium present in a variety of solutions. Different solutions, however, may require different electrodes. A new ...

THE effect of chloride-containing solutions on Portland cement has received relatively little attention. Batta 1 and Thorvaldson 2 noted that addition of chloride ions to solutions containing sulphate ...

This winter has been pretty cold. In addition, it snowed quite a bit from time to time. The sight of snow blanketing the streets and rooftops is ...