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Intranet

Làmpada de lava

Objectiu: Construir una làmpada de lava feta a casa amb 2 líquids immiscibles

  • Materials de laboratori

    Vas de precipitats

  • Reactius

    Oli vegetal

    Aigua

    Tableta efervescent

    Colorant alimentari

  • Preguntes

    Què observeu quan afegiu les tauletes?

    Quin gas s'allibera quan es dissol la pastilla?

    Amb quines propietats estem treballant?

    Quina propietat ha de tenir el colorant alimentari?

Procediment

  • Ompliu una quarta part del got alt amb aigua.
  • Afegiu 3-4 gotes de cada colorant (esperant que el colorant es barregi amb l’aigua, ja que s’hi dissol).
  • Afegiu l’oli (el doble del volum d’aigua).
  • Afegiu la pastilla efervescent i observeu què passa.

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