Baking Powder Chemistry Controlled Assessment
Baking Powder and Baking soda
Part One-Stimulus
The chemical name for baking soda: The chemical name for baking soda is sodium bicarbonate and can also be known as NaCOH3
What baking powder contains: Baking powder contains sodium bicarbonate, cream of tartar (potassium bitartrate) and a starch filler which is added to make sure the baking powder absorbs moisture
How baking powder works: Baking powder is a double-acting agent which means it reacts to liquid and heat and happens in two stages (can also stand for a few minutes unlike single-acting agents). The first reaction takes place when you add baking powder to the batter and it is dampened with water or milk. One of the acid salts responds to the baking soda and forms carbon dioxide. The second and last reaction takes place when the mixture is placed in the oven. The gas cells expand causing the batter to enlarge. The two stages help by making the batter able to stand for about 15-20 minutes without its leavening power being lost.
How baking soda works: When moisture is added to the batter, an acidic component (for example: yoghurt, chocolate, buttermilk or honey etc.) The chemical reaction that results is the production of bubbles of carbon dioxide which widen under oven temperatures causing the baked product to grow in size. Baking soda is a single-agent which means that the chemical reaction begins immediately when the ingredients are added so recipes with baking soda have to be made immediately or they will become useless and become flat.
Why they are added to recipes in baking? :They are added to recipes because they are leavening agents and are used in batter for, they cause air bubbles (made by stirring, beating or whipping )that expand when cooked at oven temperature; causing the mixture to rise.
The advantages and disadvantages of using baking powder compared to baking soda: Unlike baking soda, an acidic ingredient doesn’t have to be added to baking powder because a powdered acid is already
Part One-Stimulus
The chemical name for baking soda: The chemical name for baking soda is sodium bicarbonate and can also be known as NaCOH3
What baking powder contains: Baking powder contains sodium bicarbonate, cream of tartar (potassium bitartrate) and a starch filler which is added to make sure the baking powder absorbs moisture
How baking powder works: Baking powder is a double-acting agent which means it reacts to liquid and heat and happens in two stages (can also stand for a few minutes unlike single-acting agents). The first reaction takes place when you add baking powder to the batter and it is dampened with water or milk. One of the acid salts responds to the baking soda and forms carbon dioxide. The second and last reaction takes place when the mixture is placed in the oven. The gas cells expand causing the batter to enlarge. The two stages help by making the batter able to stand for about 15-20 minutes without its leavening power being lost.
How baking soda works: When moisture is added to the batter, an acidic component (for example: yoghurt, chocolate, buttermilk or honey etc.) The chemical reaction that results is the production of bubbles of carbon dioxide which widen under oven temperatures causing the baked product to grow in size. Baking soda is a single-agent which means that the chemical reaction begins immediately when the ingredients are added so recipes with baking soda have to be made immediately or they will become useless and become flat.
Why they are added to recipes in baking? :They are added to recipes because they are leavening agents and are used in batter for, they cause air bubbles (made by stirring, beating or whipping )that expand when cooked at oven temperature; causing the mixture to rise.
The advantages and disadvantages of using baking powder compared to baking soda: Unlike baking soda, an acidic ingredient doesn’t have to be added to baking powder because a powdered acid is already
Bibliography: Helmenstine, Anne Marie . "Difference Between Baking Powder and Baking Soda." About.com Chemistry - Chemistry Projects, Homework Helm, Periodic Table. About.com, n.d. Web. 16 Feb. 2013.