Oxycodone is in Schedule I (derived from the Single Convention on Narcotic Drugs) of the Commonwealth's Narcotic Drugs Act 1967. In addition, it is in Schedule 8 of the Australian Standard for the Uniform Scheduling of Drugs and Poisons (Poisons Standard), meaning it is a controlled drug...
Substituting in Recipes. You can substitute baking powder in place of baking soda (you'll need more baking powder and it may affect the taste), but you can't use baking soda when a recipe calls for baking powder. Baking soda by itself lacks the acidity to make a cake rise. However, you can make your own baking powder if you have baking soda and cream of tartar. Simply mix two parts cream of tartar with one part baking soda.
Use in Batter and Dough. Baking soda produces carbon dioxide bubbles, which help dough to rise. However, it only does this when mixed with water and acid. Cream of tartar is acidic and therefore serves as the acid to help baking soda rise. When mixed together and moistened, the two begin to form bubbles immediately. This means you want to get your batter into the oven quickly.