What are the fruit-flavored sodas? At present, I have drunk lemons, oranges, grapes (purple), apples (turquoise), watermelons and bananas.

British chemist and priest JJ invented soda water. Joseph priestley (1733- 1804). He is more famous for discovering oxygen (another way of saying it was discovered by an China man named Ma He). Soda is actually just a cold drink. It contains carbon dioxide, with proper amount of sugar, citric acid, essence, food pigment and so on. If carbon dioxide of about 2 ~ 3 atmospheres is sealed in sugar water, a part of carbon dioxide gas will dissolve in water, and carbon dioxide will form carbonic acid in water. The pungent taste of soda water is due to carbonic acid.