Polar bears are the largest land carnivores in the world, rivaled only by the Kodiak brown bears of southwestern Alaska. Polar bears are marine mammals, and spend much of their time on Arctic sea ice. Many adaptations make polar bears uniquely suited to life in icy habitats.
Baking soda has only one ingredient: sodium bicarbonate. Sodium bicarbonate is a base that reacts when it comes into contact with acids, like buttermilk, yogurt or vinegar. This reaction produces carbon dioxide (CO2) in the form of bubbles, like a liquid foam (think of the grade school experiments involving fake volcanoes, vinegar and baking soda). When making baked goods, the process is called âchemical leavening,â because the trapped CO2 gas makes the dough or batter rise. But when baking soda comes into contact with an acid, it pretty much reacts immediately. And thatâs a problem.
What is baking powder? Baking powder is a chemical leavening agent that causes baked goods to rise by releasing bubbles of carbon dioxide gas into a batter or dough. It is double acting, meaning that it acts once when moisture is added and again when heat is applied. This allows baking powder to give an extra lift to baked goods that contain it.