Send us your questions

Some of our visitors have sent emails with interesting questions, we decided to start having a space to answer them. In this space the blog "Restless Minds" will answer all questions you send us
Send us your question for the email: Restless Minds.

Science progress affects our daily life and "to know" means you are going to chose right, because it allows you to form your own opinion on scientific everyday issues. On the other hand, having an elegant and harmonious vision of the world where we live in leads to a feeling of intellectual satisfaction.
We believe this kind of scientific day to day knowledge should be encouraged from an early age, and that's why this project was born: science, culture, knowledge, crafts for your restless mind.

Monday, November 14, 2011

Fill balloons with carbone dioxide


Today we will see a different way to blow balloons, maybe isn't the most profitable but its for sure the funniest.

We will need:
  • Medium plastic bottle (PET),
  • big balloon, blow the balloon a couple of times before you use it,
  • 1 teaspoon of sodium bicarbonate, baking soda, a bit more if you want a bigger balloon;
  • 3 tablespoons of acetic acid, vinegar, a bit more if you want a bigger balloon.
  • tape.
How to:
  1. Lay down baking soda in the bottle;
  2. Place the vinegar in the balloon, use a funnel if you need to;
  3. Secure the open end of the balloon to the neck of the bottle;
  4. Use the tape to hold the balloon to the bottle;
  5. Lift the balloon so the vinegar falls into the bottle.
Results:
Baking soda starts to bubbling when the vinegar touch it, and the balloon fills up.

Why?
A reaction occurs when vinegar (acetic acid) touches baking soda (Sodium Bicarbonate). In this reaction Carbone dioxide is produced, along with water and sodium acetate, as show is reaction:

NaHCO3 (aq) + CH3COOH (aq) ----> CO2 (g) + H2O (l) + CH3COONa (aq)

Carbone dioxide is a gas, thats why the balloon fills up.

Et Voilá!

Enjoy!

No comments:

Related Posts Plugin for WordPress, Blogger...