Uninstall Chrome in Windows XP. 1  Close all Chrome windows and tabs. 2  Go to the& Start menu Control Panel. 3  Click Add or Remove Programs. 4  Double-click Google Chrome. 5  Click Remove. 6  Click Uninstall from the confirmation dialog.
In chemical digestion, enzymes break down food into the small molecules the body can use. In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva.
Mechanical digestion involves physically breaking the food into smaller pieces. Mechanical digestion begins in the mouth as the food is chewed. Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells.Chemical digestion begins in the mouth when food mixes with saliva. Saliva contains an enzyme (amylase) that begins the breakdown of carbohydrates.he organs produce digestive chemicals (enzymes and acids) that break down the nutrients into simpler forms so that absorption through the intestinal wall and into the blood stream can occur. Mechanical and Chemical Digestion. There are two kinds of digestion: mechanical and chemical.