Acid Gas — Carbonic

) . Though the name sounds heavy and acidic, it’s the same invisible gas that makes your soda fizz and helps plants breathe.

, it creates a very weak acid called . This is what gives sparkling water that slight, refreshing "bite" on the tongue. Without the gas, the water tastes flat; with it, it becomes chemically active. 3. The Cycle carbonic acid gas

Here is a brief look at the life of this "ghostly" substance: 1. The Discovery This is what gives sparkling water that slight,

In the 1750s, a Scottish chemist named called it "fixed air." He realized it was heavier than normal air and could extinguish a flame. When he bubbled it through lime water, it turned the liquid milky—a classic chemistry trick still used today to prove CO2cap C cap O sub 2 is present. 2. The Name The Cycle Here is a brief look at