Soda can be made at home. Take a washed soda bottle of 250ml, add 80% cold boiled water into the bottle, then add 25g-28g of white sugar and a small amount (0.2-0.3ml) of fruity essence, then add 2 g of sodium bicarbonate, stir and dissolve, and then quickly add 2 g of citric acid. Immediately press the bottle cap tightly, so that the generated gas can not escape, but dissolve in water. Put the bottle in the refrigerator to cool down. After taking it out, open the bottle cap and you can drink it.

Soda is made of mineral water or drinking water after boiling and ultraviolet irradiation disinfection, and filled with carbon dioxide.

Yes. Belonging to carbonated drinks containing carbon dioxide. The factory makes soda by pressurizing to dissolve carbon dioxide gas in water. The more carbon dioxide dissolved in soda, the better the quality. The soda sold in the market is about 1 volume, and there are L ~ 4.5 volumes of carbon dioxide dissolved in water. In addition to carbon dioxide, some soft drinks also contain appropriate amount of sugar, fruit juice and essence.