Objective: to swell a balloon with sodium bicarbonate and vinegar

Criteria for success: 1. Name of work materials; 2. Compliance stages, presented by teachers, in order to achieve the proposed experiment. 

Description of Work: The didactic activity begins by presenting mascot, Smart Smurf, who came to visit middle group (4-5 years), to see the little researchers. Preschoolers are informed that they will create a fun experiment called “balloon droll” and they identify and name the experiment necessary materials. It explains the steps working and protection rules to prevent possible accidents due to running an experiment. Proposed experiment is conducted.

Materials: plastic bottle, baloon, funnel, sodium bicarbonate, vinegar.

The experiment shall be carried out in 6 steps:
1. Pour 2-3 tablespoons of sodium bicarbonate in the flask using a funnel (we made a funnel of paper).
2. Pour ½ cup of vinegar into the bottle.
3. Carefully the flask to the bottle so that it does not fall off the content in the bottle.
4. We quickly turn the flask so that the baking soda to fall into the bottle
5. Watch how to inflate balloon, but we see also the reaction of the children because it will be one of surprise, curiosity or amusement.
6. Explain to the children how baking soda sodium in combination with vinegar creates a chemical reaction, the result of which shall be liberated gas  and inflate balloon.


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