It s a meal to eat, and it s to pull it out. , whether it is a chemical change or a physical change

Physical changes are the main thing, and chemical changes are secondary. The main components of rice are carbohydrates such as vitamins, proteins, fats, etc.; The main component of feces is also carbohydrates, but the feces contain new compounds such as ammonia, which are typical of chemical changes.

It's a chemical change when it's digested, and it's a physical change when it's pulled out!

Chemistry and physics are available. You bite the rice, it's physics, and then there's saliva to process it, which should be chemistry. In your stomach, your stomach, your intestines, you have to do this type of work separately.

Eating is rice, pulling is rice = no change.

What is eaten is, what is pulled is = no change.

What is eaten is, what is pulled is rice = evolution.

So what is eaten is food, and what is pulled out is = degradation.

Forehead... Digestion requires the catalysis of enzymes, and there may be the absorption of nutrients, which should be chemical changes.

Haha, that's the question! Of course, there are both!

The different forms of rice and feces are physical changes.

The decomposition of the contents of the meal is a chemical change.

Rice turning into is a chemical change, eating and pulling is a physical change.

It is a complex change that is mixed with chemical and physical changes.

There is chemistry, physics, and biology.

Specifically. This is a physiological change.

Digestion is the process in which the body decomposes large foods with complex molecular structures into small molecule chemicals that can be absorbed and have simple molecular structures through the movement of the digestive tract and the enzymatic hydrolysis of digestive gland secretions. Among them, through mechanical action, the food is changed from large pieces to small pieces, which is called mechanical digestion; Through the action of digestive enzymes, large molecules are turned into small molecules, which is called chemical digestion. Digestion.

Digestion. It is beneficial for nutrients to enter the blood and lymph through the epithelial cells of the mucosa of the digestive tract - absorption, thereby providing energy for the vital activities of the body. The digestion process includes mechanical digestion and chemical digestion, the former refers to the contraction and relaxation of the muscles of the digestive tube wall (such as oral chewing, stomach and intestinal peristalsis, etc.) to grind large pieces of food; The latter refers to the hydrolysis of foods with complex molecular structures into nutrients with simple molecular structures by various digestive enzymes, such as the hydrolysis of proteins into amino acids, the hydrolysis of fats into fatty acids and glycerol, and the hydrolysis of polysaccharides into glucose.

Digestion can be divided into intracellular digestion and extracellular digestion. The food ingested by unicellular animals such as paramecium is broken down by various hydrolytic enzymes inside the cell, known as intracellular digestion. Food of multicellular animals is ingested by the mouth end of the digestive tube and digested in the digestive tube, which is called extracellular digestion.

Extracellular digestion can digest large quantities of food with a more complex chemical composition and is therefore more efficient. However, even in higher animals (e.g., humans), intracellular digestion is still partially preserved, such as white blood cells engulfing foreign bodies in the body and dissolving them in cells.