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Laboratory Glassware quiz 7

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Laboratory evaporation dishes are quite fascinating in their design and use. Here are some interesting facts about them: Material Composition: Evaporation dishes are usually made of materials that can withstand high temperatures without reacting with the substances they contain. Common materials include porcelain, borosilicate glass, and sometimes stainless steel or platinum for very specific applications. High Heat Resistance: They are designed to endure direct heating, often over a Bunsen burner or hot plate. This is crucial because evaporation dishes are primarily used for evaporating solvents, which often requires sustained exposure to high temperatures. Flat Bottom Design: Evaporation dishes typically have a flat bottom, which allows for more uniform heating and evaporation. This design also makes them stable on flat surfaces like hot plates or lab benches. Wide Range of Capacities: They come in various sizes to accommodate different volumes of solutions. Smaller dishes might be used for tiny samples, while larger ones can handle more substantial quantities. Chemical Concentration Use: Besides solvent evaporation, they are also used to concentrate solutions by allowing the solvent to evaporate, leaving the dissolved solids behind. This is a common technique in both qualitative and quantitative chemistry. Versatility in Applications: While most commonly used in chemistry labs, evaporation dishes are also found in biology, pharmacology, and even in the food industry for certain types of analysis and preparation. Easy to Clean and Reuse: Because of their material and design, they are generally easy to clean and can be reused many times, making them a sustainable option in a laboratory setting. These characteristics make evaporation dishes an indispensable tool in many scientific and industrial laboratories.

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