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8 different ways to make a volcano out of soda, vinegar and water

Volcanoes made of soda and vinegar I would not be mistaken if I said that the experience of” Volcano ” made of soda and vinegar is one of the most spectacular and favorite experiences for kids. Children can repeat it endlessly. But you don’t want to do it every time using the same template. As it turned out, with the same ingredients — soda, vinegar (citric acid) and water — you can come up with quite a few variations of the known experience. We will tell you about them.

Necessary ingredient
Just in case, let me remind you of the ingredients you will need for the “Volcano” experience»:

vinegar, acetic acid, or citric acid,
The ratio of ingredients:

100 ml of water, 1 teaspoon of vinegar, 1 teaspoon of soda;
1 Cup of water, 2 teaspoons of soda, 1 teaspoon of citric acid.
I use citric acid more often, since it has no smell, and it is much more comfortable and safer to experiment with it.

There are several secrets to how you can add variety to the reaction:

To make the experience more stormy, you can use carbonated water instead of water.
To delay the start of the reaction a little, do not mix water and citric acid directly. Pre-dissolve the citric acid or vinegar in water, and pre-wrap the soda in a paper napkin or paper towel.
The reaction will be more effective if you add a dye to the ingredients (you can use gouache, but dry food dyes for Easter eggs or liquid dyes for homemade soap are more suitable).
For a thicker and more stable foam, add a drop of detergent to the volcano.
Also, the reaction will be more interesting if you add sequins or small sequins to the mixture for the volcano. The foam coming out of the volcano will also pull out the sequins. In the same way, the lava coming out of a real volcano brings stones from the deep interior to the surface of the earth.
Although the Vulcan experience is always the same ingredients, although in different containers, there is something to think about in each case. Questions that you can ask your child or think about them together, I have highlighted in the “what to think about”blocks.

Classic volcano — almost like a real one
The easiest option is to make a volcano out of plasticine or salt dough. Use a new plasticine is not necessary, it is quite suitable plasticine that was used earlier, but now turned into a gray mass. In the volcano, which you can see in the photo below, we added stars-sequins. To get them to the surface, we had to Wake the volcano several times, each time increasing the amount of ingredients. In the end, everything turned out with 3 teaspoons of soda and 1.5 teaspoons of citric acid. And another tip: it is better to fill the sequins with the very last. And if you have them under the reagents, after adding water, quickly stir in the volcano’s mouth with a wooden stick.

A volcano from clay

Another option is a glass or plastic bottle with a high narrow neck (I prefer glass, as it is more stable). It is very interesting to watch how the foam rises up the narrow neck from the inside up, and then flows down the walls of the volcano.

After carefully examining our kitchen, we noticed that the volcano is very similar to the funnel. The lower part of the funnel should be covered with several layers of food wrap. From above, the funnel can be closed with a layer of foil. And to avoid surprises, it is better to put the funnel covered with film on a tray.

Something to think about. If you do not regret the ingredients, and you get a violent reaction, you will get a spitting volcano. Discuss with your child why? What causes a volcano to spit in the funnel?

Answer. The neck of the funnel is narrow, carbon dioxide is released rapidly and in large quantities. In a hurry to get out of the funnel, carbon dioxide takes water with it.

If there is no funnel at hand, you can use the top of the plastic bottle instead: cut off the top of the plastic bottle (the cut part can be 7-10 cm high), cover the bottom with several layers of food wrap or foil. The volcano is ready — you can make the filling.

Volcano in a bottle and funnel

A volcano in a glass, or how to make water boil without heat
If you do not want to sculpt a volcano, and there is no funnel or plastic bottle at hand, you can make a volcano in an ordinary glass or jar and it is interesting to beat it. For example, tell your child that you can make water boil without using an electric kettle or stove.

Dissolve 2 teaspoons of soda in 1 Cup of water (the glass must not be filled to the top, otherwise your volcano will burst its banks). Pour 1 teaspoon of citric acid into a glass. The water in the glass to “boil” — will seethe. Ask your child to touch the glass. Is it hot? Is the liquid hot in it?

Instead of soda water in this experiment, you can make a solution of vinegar or citric acid (0.5 liters of water-2.5 teaspoons of citric acid or vinegar). Then you will not add citric acid or vinegar to the glass, but soda.

What to think about 1. Now pour water into another glass and add 1 teaspoon of citric acid. Nothing will happen. Let the child Express their assumptions, why this happens, what is the magic of water in the first glass.

Add 2 teaspoons of soda to the second glass, and now the water will “boil” in this glass. Discuss with your child what is happening, what reaction makes the water “boil”.

Volcano-water boils in a glass

Answer. When soda and citric acid meet in water, they interact. This releases carbon dioxide. Since gas is lighter than water, gas bubbles rise to the surface of the water. Here they burst, thereby causing the water to “boil”.

If before you put a spoon with citric acid in glasses with soda water and ordinary water, you pour a little liquid from each glass, you will have another way to show that the liquids in the glasses are different — add red tea to them. In a glass of plain water, the tea will turn a little paler, and in a glass of soda water, it will turn blue.

What to think about 2. Mix the soda and citric acid in a Cup. Watch, is anything going on? Nothing.

Answer. To start the reaction between soda or citric acid, water must be present, or one of the components must be in the form of a solution.

What to think about 3. In two glasses, pour the same amount of citric acid solution. In one glass, lower the entire spoon with you, and in the other glass, carefully pour the soda from the spoon. In which case will the volcano be more violent?

Answer. More violent will be the volcano in the glass where you put the spoon with soda entirely, since in this case, more molecules meet, combine and react at once.

You can also compare volcanic eruptions based on soda and lemon water. With the same amount of ingredients, which one will be more violent?

Boiling lake
What I particularly like about this option: you can give the baby two teaspoons, a container of soda and citric acid, and for a while give the freedom to experiment.

You will need: a bowl of water, citric acid, soda, 2 teaspoons and a larger spoon to stir. Let the water in the bowl be a lake. Show your child that if you add a little soda and citric acid to the lake, the lake will boil. Repeat, and let the baby try it himself. And I assure you that until the soda and citric acid tanks are empty, the baby will be busy, and you will have time to do some of your own things.

Volcano-boiling lake

What to think about. Try stirring your lake with a spoon or stick. Will the lake boil more or less?

Answer. The volcano that is disturbed erupts more strongly, because by mixing the water in the lake, we help the molecules of soda and citric acid to meet faster.

What to think about. Add citric acid and soda to the water not at the same time, but one after the other. Let’s start with citric acid, then add soda. The lake will boil and stop boiling. Add a little more soda — nothing happens. What should I add? Citric acid. Added. The lake is boiling again. Ceased. Add more citric acid. Nothing. What should I add? Soda. Added. The lake is boiling again, etc.

Answer. Only a certain amount of soda and citric acid can meet and react. If there is too much soda in the water, the excess will settle to the bottom after the eruption ends. If there is too much citric acid in the water, the lake will eventually fall asleep too. To “Wake up” the lake again, you need to add what is missing.

Rough river
We had a boiling lake. Why not create a boiling river? Ideal for this purpose is the designer “Fun slides” from Bauer or “Marbutopia”. This will be the riverbed. If you do not have such a designer, you can cut along either a plastic or foam pipe. We will set the course of our river in a basin or bath.

Prepare a mixture of soda and citric acid (ratio 2:1) and a jug or bottle of water. In a mixture of soda and citric acid or in water, you can add a dye. Pour this mixture into the bed of our river, then start to pour water from above. The water moves down, and the river begins to boil.

Vulkan-stormy river

If you pre-close the hole of the bath with a cork, you will get a colored lake at the bottom. Let’s say it’s blue. Make a red river after it, and your lake will turn purple.

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