Baking Soda and Baking powder | Difference between Baking powder and Baking soda

Baking soda :-

• It is made of sodium bicarbonate
• It makes cookies spread during baking
• It is used with acidic ingredients like lemon juice , butter milk
• It has no drying agents 
• When baking soda is added product must be baked immediately
• It does not contain any acid
• It reacts with liquid not heat
• It leave bitter taste if not combine with acid
• Baking soda + Acid( yogurt, buttermilk) = carbon dioxide

Baking powder :- 

• It is made of social bicarbonate plus cream of tartar 
• It makes cookies puff during baking
• It is used with non acidic ingredients
• It contains starch as drying agents 
• Baking powder are single acting and double acting , if single acting is used the product must be baked immediately and when using double acting the product should be keep for sometime.
• It contain two kind of acids