What is the difference between baking powder and baking soda?

Baking soda contains one ingredient, sodium bicarbonate. However, Baking powder contains sodium bicarbonate, monocalcium phosphate and either sodium acid pyrophosphate or sodium aluminum sulfate.

Baking soda contains one ingredient, while baking powder has a few. Baking soda also requires an acid and a liquid to become activated (or in baking, it needs an acid and liquid to help rise) and for baking powder, it only needs a liquid to become activated (or help rise).

hope this helps!

including the octave, the answer would 8 notes in a major scale with one note being played twice. ex) c major scale includes: c, d, e, f, g, a, b, c

notice that c is played twice

however, if you were to ask me how many different notes are in a major scale- the answer would be 7.