And This Is Why Baking Powder Can't Be Used As Baking SodaEsther Inglis-Arkell9/26/14 11:00am9026EditPromoteGo to permalinkThey're both white powders. They're both used in baking. Both substances are leavening agents, substances that release gas bubbles and puff up dough so it's fluffy instead of flat. Both have the same look and texture, but they are used differently. What's the chemistry behind that?