What happens to a cracker in glass with saliva and vinegar?

When a cracker is placed in a glass with saliva and vinegar, several chemical reactions occur. The saliva contains enzymes such as amylase that begin to break down the starch in the cracker into smaller sugar molecules. The vinegar, which is a weak acid, reacts with the baking soda in the cracker, releasing carbon dioxide gas.

Physical changes:

As the carbon dioxide gas is released, it forms bubbles that cause the cracker to rise to the surface of the liquid. The cracker will continue to rise and fall as the gas is released. The saliva and vinegar also cause the cracker to become soggy and soft.

Taste changes:

The saliva and vinegar add flavor to the cracker, making it taste salty and sour. The carbon dioxide gas also contributes to the taste by creating a fizzy sensation in the mouth.

Overall, the cracker in glass with saliva and vinegar undergoes both chemical and physical changes. The chemical reactions break down the starch into sugars and release carbon dioxide gas, while the physical changes cause the cracker to become soggy, soft, and flavorful.