One method will require the use of vinegar, soda pop bottle and a baking soda. Just pour about two inches of the vinegar into the bottle that you have chosen. After that, add two teaspoons of baking soda. The moment the baking soda is produced, bubbles will be formed inside the bottle. Now when the vinegar and the baking soda is allowed to mix with each other, a chemical reaction will always happen that effectively sets free a gas called as carbon dioxide.
eggshell
There is another way on how to make carbon dioxide in your homes. In this method, you are required to cover the bottom of the bottle with layers of eggshell pieces, or you can use bits of marble or limestone pieces. Then just fill the bottle with three-fourths full of vinegar. Again bubbles can be seen rising inside the bottle. And these bubbles that can be observed are the carbon dioxide that is produced inside the bottle.
Another answer to the query, how to make carbon dioxide, is through the use of dry ice. You are required to pick pieces of dry ice by using tongs and then placing these dry ice pieces on water. The bubbles that are produced are the carbon dioxide. You can also observe a fog that is formed; this fog is the condensed moisture in the air and not the gas itself. Another experiment that can be done is by mixing yeast with sugar and water. The mixture will also produce the gas
(Most popular method)
Carbon Dioxide = CO2
1. You will need an empty bottle 2liter or bigger "WITH A CAP"
2. A long piece of aquarium hose long enough to reach from the cap on the bottle to over top of your plant(s).. so be sure u measure how much hose u will need from where your bottle will be sitting.
3. At least 2cups of White Sugar
4. 2 Table Spoons of Bakers Yeast
First start by making a small hole in the cap of the bottle just big enough to put one end of the aquarium hose (or medical hose if you can get it) in and seal it with any type of glue/sealant wait to dry.
