Fun Science is an agenda for the Saung Aksara literacy class in the third week of every month. Learn science in a fun way, and of course: It’s fun!
So, for fun science yesterday, we did an experiment using quite simple materials. Namely empty mineral water bottles, balloons, vinegar and baking soda. The same material can also be used for the volcano eruption experiment, except for the balloons.
Tools and materials
Because there were quite a number of children, we divided them into two groups. We give each group the tools and materials, namely:
- 3 empty bottles
- 3 balloons
- 2 bottles of vinegar
- 2 packs of baking soda
Steps for the Fun Science Experiment Inflating a Balloon Without Being Blown Up
First, fill the bottles with different volumes of vinegar solution. A little, quite a lot, and a lot. Likewise with balloons filled with baking soda.
Then, insert the end of the balloon into the mouth of the bottle and then position the balloon upwards so that the baking soda that is there falls to the bottom of the bottle filled with vinegar.
Slowly, the balloons will fill with air, and each one is equal to the volume of vinegar and baking soda. If it is filled a little, the balloon is small, the more it is, the bigger the balloon.
The screams and admiration of the children were heard during the process, some even walked away for fear that the balloon would pop????
Why did it happen?
After the experiment is complete, together we discuss, why did that happen?
Apparently, a solution of vinegar, which is acidic and baking soda, which is alkaline, creates a chemical reaction that produces CO2 or carbon dioxide. Which then pushes the O2 or oxygen that was in the bottle up and causes the balloon to expand and expand.
The children also discussed why did the bottles get so cold? It turns out that this is called an endothermic reaction, namely the reaction of absorbing heat from the environment to the system.
The mixture of vinegar (acid) and baking soda (alkaline) is neutral so that there is a transfer of temperature from the outside of the bottle (environment) to the inside of the bottle (system).
[ Baca juga: Mainan Anak, Beli atau Bikin Sendiri? ]
“It’s fun and exciting to learn science with mom and friends. It feels like being a scientist doing experiments,” said Umami, who has never been absent from Saung Aksara activities.
How, isn’t our experiment fun? Come on, try it at home too!
Tons of love,
