lunes, 23 de septiembre de 2013

A volcano eruption

A volcano eruption.
    * Half fill a plastic bottle with sodium bicarbonate and place on a tray.




* Put sand around the bottle.

   * Mix vinegar and food colouring and pour it into the bottle.

* Observe the eruption. The bubbles that are created are filled with caron dioxide gas which pushes to vinegar to the superface.

1 comentario:

Anónimo dijo...

Fabuloso.Es muy interesante y los chavales aprenden un montón