回复：有时有点confused,what is the difference between baking pow

baking powder:
Commercial product used to leaven baked goods. It consists of three ingredients: baking soda, the source of the carbon dioxide gas that causes the dough or batter to rise; an acid, such as cream of tartar, calcium acid phosphate, or sodium aluminum sulphate, which, when the powder is combined with a liquid, causes the baking soda to release its gas; and a starch such as cornstarch (cornflour) or flour, to prevent the powder from absorbing moisture.

Baking Soda:
Baking soda (sodium bicarbonate) is a naturally occurring earth mineral that is available in the form of a white powder at grocery stores. It is used as a deodorizer, in tooth cleansers, and also as a leavening agent in muffins, breads, cakes and cookies. We like to use it in bath bombs because, with the citric acid, it makes the fizz.