Lava lamp

This is a fun, beautiful and entertaining chemistry experiment that can easily be repeated at home. All reagents are available in almost any kitchen, and if not, then they can definitely be bought at any grocery store.
I will show you how to make something like a lava lamp, but unlike a real one, it will start working immediately and will not require heat to continue the reaction.

Required

Baking soda.
Table vinegar.
Sunflower oil.
Food coloring - color of your choice.

Container - any glass jar. For illumination I will use an LED flashlight.

Making a chemical lava lamp

Take a tablespoon of baking soda and pour it into the bottom of the jar. It is necessary that the entire bottom is covered with soda.

Then pour in sunflower oil. This is the main component, so we fill the entire jar with it.

Pour vinegar into a small container.

Add food coloring to this amount of vinegar.

Turn on the backlight.

And place the vessel with oil and soda on this backlight. The lava lamp must be illuminated.

Pour mixed vinegar and dye into the mixture.

And our lava lamp immediately starts working. The bubbles alternately sink to the bottom and then rise up to the neck of the jar.

This spectacular experience can be repeated with children, I am sure that they will be completely delighted.

The principle of operation is simple: vinegar is heavier than oil and therefore the bubbles first sink to the bottom. Having touched the bottom, acetic acid reacts with soda, resulting in the formation of bubbles of carbon dioxide, which pull the bubble upward. Having reached the top, carbon dioxide escapes and the bubble falls to the bottom again. So the cycle is repeated for a certain time until the reaction of vinegar with soda has completely passed.
PS: You can use several dyes at once, mixed in different containers with vinegar. And pour them in at the same time. It will look very cool.