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Intranet

Agua que no moja

Objetivo: Observar el efecto de la tensión superficial del agua

  • Material de laboratorio

    Recipiente de plástico

  • Reactivos

    Agua

    Poder del talco

    Jabón de fregar

  • Preguntas

    ¿Qué se observa al sumergir los dedos? ¿Y cuando hay jabón?

    ¿Con qué propiedad estamos trabajando?

Procedimiento

  • Llena el recipiente de plástico con agua hasta un poco más de la mitad.
  • Añade polvos de talco por toda la superficie del agua.
  • Acerca suavemente los dedos de una mano a la superficie y sumérgelos suavemente en el agua. Observa lo que ocurre.
  • Ahora prueba a mojarte los dedos con jabón líquido (lavavajillas) y sumérgelos de nuevo en el agua. Observa lo que ocurre.

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