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, 20 de desembre del 2010

International Year of Chemistry: the balloon

MATERIALS:
- A bottle.
- A balloon.
- Vinegar.
- Sodium bicarbonate.
- A funnel.
INSTRUCTIONS:
- Fill half of the bottle with vinegar.
- Fill the balloon with sodium bicarbonate. Use the funnel.
- Adjust the balloon to the bottle.
- Pour the bicarbonate to the vinegar.
- The balloon starts to blow up.
WHY?
When bicarbonate mixes with vinegar (an acid) it produces carbon dioxide. This is the gas that blows the balloon up.
WHAT DO YOU THIN ABOUT IT? WRITE YOUR COMMENTS!
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1 comentari:

  1. Arnau10 de gener del 2011, a les 8:38

    Hello!!
    I'm Arnau. This experiment is funny and fantastic. My favourite part is when the balloon starts to blow up.

    ResponElimina

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