Baking Powder contains 3 things.
An acid known as cream of tartar
A base known as baking soda
A filler commonly corn starch (insignificant)
Now when there is a liquid added to the baking powder and heated, the liquid causes ionization of the compounds in the acid of the baking powder and the base of the baking powder to cause a neutralization (the reaction between an acid and a base). This neutralization gives carbon dioxide that will allow the flour (or any other baking batter) to rise.
Baking powder is a leavening agents, which means it is added to baked goods before cooking to produce carbon dioxide and cause it to 'rise'. Baking powder contains baking soda, but the two substances are used under different conditions.
When you heat baking powder, it releases carbon dioxide gas, which helps baked goods rise. This reaction occurs quickly when the baking powder is mixed with a liquid and heated in the oven. Heating baking powder at high temperatures can cause it to lose its leavening power over time.
The same as in any other baked good, to cause the waffle to rise when cooked.
Both release carbon dioxide gas bubbles. These, in turn, cause baked goods to rise.
If by "thicker" you mean raised higher, then yes, perhaps. Baking powder and baking soda are both "leavenings," which cause cookies and other baked goods to rise. But there are many possible reasons that cookies bake up too flat and chewy: Too much liquid Too much fat (butter) No acidic ingredient to react with baking soda. Too much baking soda or baking powder. Not enough egg. Not baked long enough Baked at the wrong temperature. All these possibilities depend on the specific recipe. Some cookies contain nothing more than flour, butter and sugar. Other cookies have long lists of ingredients. And some cookie recipes are MEANT to produce flat, chewy cookies.
Yeast, like baking soda (and baking powder), is used to leavened baked goods . The difference between these leavening agents is that baking powder/soda react chemically to produce the carbon dioxide that makes the baked goods rise. Yeast, on the other hand, is a living organism and the carbon dioxide it produces is the result of the yeast feeding on the dough. When yeast is used in baked goods it not only increases the volume but also improves the texture, grain and flavor of the bread.
The question cannot be answered as it is written. The proper amount of baking powder depends on what you are trying to bake. Biscuits require more while cookies require less. More baking powder can cause the dough or batter to rise too quickly then fall, resulting in denser baked goods instead of lighter baked goods. Without a thorough knowledge of baking and the function of different ingredients, it is much smarter to follow a proven recipe without changes.
Bicarbonate of soda (aka, baking soda, sodium bicarbonate) and baking powder are both "leavening" agents. Certain recipes call for baking powder while others call for baking soda due to the amount of rising that will occur and the conditions that are required to cause these reactions. When using baking soda (bicarb) alone, an acidic ingredient is needed to cause the chemical reaction, such as buttermilk, cocoa, etc, however if the recipe calls for baking powder, using baking soda alone will not give you the same effect and the baked good may not rise as fully as intended (although it is still possible to do this). To solve this you can easily make your own baking powder. To make your own baking powder, mix 2 parts cream of tartar with 1 part baking soda (bicarb). This will give you the "double acting" effect you find in most commercial baking powders.
Although baking powder can help smother or cool small grease or cooking fires, Baking powder can also cause other fires to get larger or create an explosion.
it is ionic cause its a powder
Baking powder is a leavening agent, which is what causes the cake to rise. Too little baking powder will cause the cake to be tough and compact, and won't rise as expected.
The function of leavening agents is to cause the baked goods (breads, cakes, etc.) to rise. There are different types of leavening agents, such as yeast, baking powder and baking soda. Eggs are also sometimes used as a leavening agent, especially in some pound cake recipes. Without leavening, the baked goods will not only be flat, but won't taste as good, either.