Mute
Com.Ciência.Gaia
O que acontece com a água quando a pressão diminui? Ela entra em ebulição mesmo sem aumento de temperatura. Nesse experimento, o cacho de uvas está dentro de uma câmara de vácuo, onde ocorre uma forte redução da pressão externa. Como o ponto de ebulição depende da pressão, a água presente no interior das uvas passa a ter energia suficiente para mudar de fase líquida para vapor mesmo em temperaturas relativamente baixas. Isso ocorre porque, com menor pressão externa, as moléculas de água precisam
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