Now, fold your bias tape over to the back side, encasing the raw edge. Pin as you go. Bias tape folded over to the back side: This is what my pinning looks like. I slip the pins under the bias tape on the top side and make sure it catches the bias on the back.
Baking Powder. Baking powder on the other hand, is actually a combination of baking soda plus another acid, in the presence of an inert stabilizer (a fancy term for an inactive ingredient that keeps the mixture from reacting), which is often a bit of cornstarch.
Baking powder is a mix of baking soda (or another carbon-dioxide producing chemical), a powdered acid such as cream of tartar, and a starch to keep the chemicals dry. When moistened, the powdered acid reacts with the soda, releasing carbon dioxide for lift in recipes without a strong acidic component.