Interesting Halloween "self-inflating" grimace balloon

The author wants to play together every day.

Game purpose:

(1) Understand chemical reactions. (2) Application of life science. (3) Enhance scientific interest. (4) Halloween theme collocation.

Suitable age: over 3 years old.

Preparation time: 20 minutes.

Preparation materials:

1. Several balloons. (I choose 10 inch balloon) 2. White vinegar150 c.c.3. baote bottle. (glass or plastic) 4. 1 pen. 5.2 tablespoons baking soda. 6. Funnel 1. 7. 1 spoon. 8. Pump 1 (optional, you can blow with your mouth)

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How to play:

1. Prepare the materials.

2. Inflate the balloon first.

3. Then draw a face and deflate the balloon.

4. Then, put the deflated balloon into the bottom of the funnel.

Next, put two teaspoons of baking soda into the balloon.

6. Next, put 150c.c white vinegar in Baote's bottle, and then put a balloon on the bottle mouth.

7. Now, please prepare for the countdown: 3, 2, 1 ... Wow! After the baking soda in the balloon is put into the bottle, the grimace balloon automatically expands and becomes bigger! !

8. This is a chemical reaction in which the most basic baking soda powder is added with white vinegar to produce carbon dioxide, that is, Ch3cooh+nahco3 → Ch3coona+CO2+H2O.

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9. This classic Halloween children's experiment must be known! Never mind the idea of having a Halloween party at the weekend, just keep playing together every day!

STEAM education | Play with a grimace balloon that will automatically inflate. Authorized to reprint the original source every day-Early Childhood Science