This experiment is for fun!
Today we are experimenting in the kitchen. We learn about chemical reactions that occur in cakes where we put sodium bicarbonate or baking powder (based on the same substance). To make things even more interesting, we will test each piece of information. Let the fun begin!
Experiment with sodium bicarbonate
List of ingredients:
- 1 soda bicarbonate bag (or more, because the little one will ask for a bis)
- the water
- Food color or fruit juice / colored vegetables
- vinegar
Required Objects:
- 1 pot
- 1 thermosetting vessel
- 2-3 jars
- 1 tray
- 1 teaspoon
Why do they grow cookies just when we put them in the oven?
The first part of the experiment is carried out by the parent or, under close supervision, by the children older than 10 years.
Put boiling water and, after boiling, stop the fire and add a teaspoon of bicarbonate tip. Mix and see what happens to the water.
Small gas bubbles will appear on hot water bicarbonate contact. Repeat the test, this time with cold water and you will notice that nothing happens.
Explanation: Bicarbonate in contact with hot water forms a reaction, which results in the release of carbon dioxide, a gas that forms bubbles inside the dough and makes it grow. Therefore, at high temperatures, cakes grow if they contain bicarbonate or baking powder. However, the reaction I have just seen is too small to grow a dough.
Why is an acidic ingredient needed when using bicarbonate?
Place a glass bowl on a tray and half fill it with vinegar, then sprinkle a lemon with a bicarbonate tip.
Notice how foam is formed abundantly.
Explanation: Vinegar is an acid which, in contact with sodium bicarbonate, produces carbon dioxide and produces foam, that is, many small bubbles of gas.
How do we make colored foam?
Prepare several pots of vinegar mixed with food color or fruit / vegetable juice and sprinkle a teaspoon of bicarbonate. Spoon the spoon and now you can enjoy the show
More bicarbonate.
And more bicarbonate.
And fun continues …
Photo by: complementaryfood.com