mechanical digestion
By definition mechanical digestion is a physical part of digestion.
what involves both chemical and physical change on earths surface
intestine
intestine
Mechanical digestion stands for the break down of food by chewing. Mechanical digestion is the physical part of the digestion process of the human body.
energy is part of a physical change
Digestion is the PROCESS of breaking food down so that it can be used by a body. In humans, PART of that process involves an acid in your stomach.
the chewing in the mouth is part of digesting of food particularly carbohydrates. It is the only part of physical change because the food is only broken down to digestable particles. The rest of digestion (including the small intestines and stomach) are the parts encountering chemical change due to many enzymes and acids participating. The End.
Distillation is a physical process, not a chemical change. It involves the separation of components in a mixture based on differences in their boiling points. The chemical composition of the substances remains unchanged during distillation.
The esophagus is not directly involved in chemical digestion. Its main function is to transport food from the mouth to the stomach using peristaltic contractions. Chemical digestion primarily occurs in the stomach and small intestine, where enzymes break down food into nutrients that can be absorbed by the body.
The first part of mechanical digestion is chewing, also known as mastication. This process involves breaking down food into smaller pieces in the mouth, which increases the surface area for enzymes to further break down the food during chemical digestion.
Sawdust is part of a physical change that takes place when wood is sawed.