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Intranet

Columna de colors

Objectiu: L’objectiu d’aquesta pràctica és crear una columna amb líquids de diferents colors.

  • Materials de laboratori

    4 gots

    Cilindres graduats

    Una culleradeta

  • Reactius

    Sucre

    Aigua

    Colorant alimentari

  • Preguntes

    Quina és la solució més densa?

    Què passaria si barregem les solucions en l'ordre contrari?

Procediment

  • Aboqueu 100 ml d’aigua a cadascun dels vas de precipitats.
  • No afegiu res al primer got. En el segon, afegiu-hi 3 cullerades de sucre. A la tercera, afegiu-hi 6 cullerades de sucre, i a la darrera 9 culleradetes de sucre.
  • Remeneu bé fins que es dissol tot el sucre.
  • Per diferenciar-los, afegiu-hi colorant alimentari.
  • Amb cura, aboqueu tots els líquids al cilindre graduat començant pel més dens.

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