Baking Soda Bubbles and the Science of Sour

In this family STEM event, students use sodium bicarbonate to detect the presence of acid in food and examine the relationship between acidity and food taste.

As you eat and drink, your taste bud will find a sour, sweet and bitter taste. If you drink kimchi juice, you may write it as soon as sour. The same can be said about lemon juice. However, foods or beverages containing ingredients that fight (or hide) "sour" may have a particularly sour taste when eating and drinking.

Due to its sourness, things are not good for us. One way to measure the acidity of a food or beverage is to test its pH. In this week's Family Science event we used a simple test using baking soda to judge if the food is acidic and showed another way to observe the reactions of food and drink in combination with baking soda. Carbon dioxide gas is generated when sodium bicarbonate and acid are mixed. By observing and comparing the differences in this chemistry between food and drink, students can decide which foods are acidic.

If the food is acidic, what happens when mixed with sodium bicarbonate? Do you know the obvious difference between strongly acidic foods, weakly acidic foods, neutral foods and basic foods? Let's learn about this bubble kitchen chemistry experiment!

The following Science Partner activities posted on the Science USA website provide all the information necessary for doing this scientific activity with family and class students.

Students interested in this week's family science activities and other kitchen chemistry and science issues related to scientific experiments focused on taste bud can also enjoy the ideas of the following practical scientific projects I will.

Baking soda is pure sodium bicarbonate, extender or raising agent for baking. When baking soda is combined with moisture and acidic ingredients such as buttermilk, sour cream, yoghurt, lemon juice, apple sauce, cocoa, chocolate, brown sugar, molasses and tartar cream, carbon dioxide bubbles are formed. These forms grow larger as you warm and raise your baked confectionery. Mixing baking soda and acidic ingredients will start this reaction, so you may need to put freshly baked food in the oven immediately. "There's only 30 minutes of cake," Chef Eddie said. "If you do not put it in the oven until then it will not be that high, but biscuit recipes, including baking soda, may be frozen and it will still be spreading."

Baking soda is a single ingredient: sodium bicarbonate. Its main feature is to release carbon dioxide when you encounter acid. It is carbon dioxide bubbles that gives the fluffy texture to batter's foam. Baking acids are lemon juice, vinegar, buttermilk. That's why you can not replace buttermilk with regular milk. Baking soda will not be effective and the cake will not rise. To make buttermilk, add 1 cup of lemon juice or vinegar to each cup of milk needed in the recipe.

According to Ched Eddie, buttermilk and sour cream contain acid which "shortens" or softens gluten (baked snack protein nets). "Baked soda is also included in freshly baked snacks including buttermilk and sour cream.Baking soda can soften the baked goods and give the recipe a double sweet and gentle taste." Delicious BUTTER Milk Biscuits and pancakes often appear in the gourmet restaurant's branch menu - there are legitimate reasons. Buttermilk (fermented milk) brings a rich flavor to baked goods without adding fat. If you add a small amount of vinegar or lemon juice to your milk, you can make buttermilk in your kitchen. Leave the mixture for about 10 minutes so that it may become thicker