yes but very very little and in some cases it can deflate
No, baking powder is a levening agent that makes baked goods rise.
Self raising flour makes the cake rise, but if you don't have any you can use plain flour and baking powder which has the same effect. 225g plain flour and 4 teaspoons baking powder, will transform it into self raising flour.
If you use self-raising flour then yes. If you use plain flour then you will need to use baking soda or baking powder.
Baking Powder is what makes cakes rise, similar to yeast in bread. Plain flour recipes usually need baking powder added alongside other ingredients, whereas Self-Raising flour already has Baking Powder combined so extra is not usually needed. If you bake cupcakes with Plain flour and without Baking Powder they will be very flat, about the same size as the raw mixture, it won't be light and fluffy but quite dense. It is also a good idea to not substitute Self Raising flour in a recipe that calls for Plain and Baking Powder (and vice versa), as the amount is usually tailored to give just the right amount of rise to the food.
if you've used self-raising flour then yes the mixture will rise, withour any baking powder
Yes you do need to put in baking powder because baking powder makes them rise
If a recipe calls for self-rising flour, your recipe will not turn out if you replace it with unbleached flour only because unbleached flour does not rise. You would also need to add baking powder to the recipe (about three teaspoons per cup of flour) if you were making this substitution in order for your recipe to rise.
baking powder and salt (there is no yeast in self rising flour) :)
self raising flour is basically plain flour with baking powder in it so for a cake you can use plain flour with baking powder but it is easier to use self raising and it also has other raising agents. you need to use it to make you cake rise, if your cake didn't rise it would be small and very dense making its texture not as nice to consume.
This is only a guide. Anything that needs to rise or uses self-raising flour. This is because if you do not have any SR flour you can use plain flour and baking powder. Also using baking powder you can control how much food will rise. This is especially useful for cakes as all ovens are different. Other recipes that may use baking powder could be scones and some biscuits.
Helps them rise Self raising flour is plain flour with a little baking soda in!
All purpose is comonly used in baking. However, it will not rise unless you add baking soda, baking powder or yeast. A common southern recipe that some cooks use for all purpose flour is dumplings called 'slick dumplings'. Some classic recipes do not use dumplings that 'rise'. It is a matter of preference. However usually one would want to use self rising flour that has baking powder/salt to rise for a ligher texture.