baking soda means: Bicarbonate of soda, also known as sodium bicarbonate, is a leavening ingredient that is essential for baking powder. If sodium bicarbonate is used as the only leavener in a recipe, it must be neutralized by some acid. You can use buttermilk, yogurt and sour cream as adequate acids. Baking soda can be used to neutralize acidity in recipes that require large quantities of fruit. (in Cooking Dictionary)

What else does baking soda mean?

A base is an alkaline substance that forms when sodium carbonate, purified from mineral trona, is combined with carbon dioxide and/or water to create sodium bicarbonate. Na2CO3 + CO2 + H20 + NaHCO3 sodium carbonate + carbon dioxide + water + sodium bicarbonate . The main source of carbon dioxide gas for leavening systems is baking soda. Baking soda neutralizes the acids and adjusts the pH of the baked goods. Baking soda and baking powder are not the same thing. “. (in Cooking Dictionary)

NaHCO is a white, crystalline compound. 3 It has a mildly alkaline flavor and is used to make effervescent beverages and salts as well as artificial mineral water, pharmaceuticals, fire extinguishers, and pharmaceuticals. (in Merlin Dictionary)