Welcome!

This is a blog of the 4th grade class in la Farigola de Vallcarca School in Barcelona. This year we are doing “Aula de Ciències” in English.
In this blog we want to show you the experiments we do in our Science Lab. Science is fun!


dilluns, 19 de desembre de 2011

Ball-egg


MATERIALS:


Two glasses

Two eggs

Vinegar

Water

INSTRUCTIONS:

- Fill a glass with water and put one egg into it.

- Fill the second glass with vinegar and put another egg in.

- Wait three or four days.

- The egg in vinegar hasn't got a shell. It's bigger and darker than the egg in water.

WHY:

Vinegar is an acid and dissolves the calcium in the eggshell. It is calcium that makes the shell hard. A thin flexible membrane just under the shell still holds the egg's shape.

Water does nothing to the eggshell.

WRITE YOUR COMMENTS!


4 comentaris:

  1. I love this experiment.I like when the egg was black and when the egg was jumping.

    ResponElimina
  2. We love the experiment.The egg in vinegar is jumping but egg in water is normal.

    ResponElimina
  3. WE LIKE THIS EXPERIMENT BECAUSE IT IS VERY FUNNY AND EXCITING. THE EGG IN VINEGAR IS VERY SOFT.

    ResponElimina
  4. This experiment was very funny.

    ResponElimina