Скачать или смотреть The strange behavior of a saturated salt solutions (and what it might mean for the worlds oceans)

In this experiment we add excess salt to water and explore the associated temperature change as well as the saturated salt layer that forms above and around the salt. We then break down a potential explanation based on our evidence for why water cools when salt is added and get into such topics as hydration shells, endothermic reactions, electronegativity, hydrogen bonding, ionic bonding, and ocean salinity. We conclude by reflecting on the implication of desalination and the potential danger posed by returning highly saturated salt solution back to the ocean.

For your next great experiment check out this experiment that investigates everything you ever wanted to know about fire (and a few surprises as well!)
   • Combustion Reactants, Products and SURPRIS...  

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