I don't think of it as an organ, but chemical digestion of starch begins in the mouth, using saliva.
The small intestine contains an enzyme called peptidase, which works best in the alkaline environment of that organ (pH of about 8.) This helps further break down food that has already passed through the acidic environment of the stomach. Enzymes are protein catalysts which speed up the digestion process.
Gallbladder is a small organ but has a very huge part in the digestion process of a human body. The liver located near the Gallbladder, excretes fluid that helps the Gallbladder tear down the fats.
If the activation energy for a particular chemical reaction was not available the reaction cannot proceed. The chemical reaction cannot proceed without activation energy and cannot form products.
No blood is not a chemical. Though there is a lab test that is called a blood chemistry it actually shows things like minerals and CO2 dissolved in the blood. Blood is a vital body organ that transports sugar, nutrients, oxygen, CO2, and waste through the body.
That is the question we must ALL ask ourselves. What is the conclusion of our life? Is there a conclusion? Or is it just some kind of perceptual illusion of imagery where anything can happen and it's all played out by a series of events. Our human body is composed of organ systems that perform chemical reactions every day. But when the human body dies, it is the conclusion of the life and chemical reactions are made no longer.
Salivary glands
Mouth: in saliva there is this amylase enzym to break it down to sugar(s)
mechanical digestion is when you are breaking down food almost by hand. you're breaking it down manually. an example of mechanical digestion is chewing. it begins in your mouth and ends once you swallow.
The major organ responsible for chemical digestion and absorption of food is the small intestine.
Stomach.
Your mouth begins digesting starch. Saliva contains enzymes that help digest starch. Then when food enters your small intestine, other enzymes help digest starch. In your large intestine, bacteria help you digest starch.
Stomach
The mouth is where literally begins,
Its the mouth.........cause saliva breaks down some amount of starch into simple sugars. but its not a very major site..............
fatty acidsglycerol
The organ responsible for most of the chemical digestion in the human body is mainly the stomach.
In the stomach.