After the food is ingested, the food is broken up using enzymes. Enzymes are a renewable catalyst, which means that they can be used again and again to speed up a reaction. The best way to describe the process is the enzymes have a specific hole that only the right molecule can fit into. An example is Amylase enzymes. They only allow starch molecules to fit in. once the molecules are fitted inside them, the enzymes immediately break apart the molecule and down into simpler molecules. Amylase breaks starch into fatty acids and glycerol. Lipase enzymes break down fats. Etc...
The purpose of this breaking down is to make it easier for these molecules to pass in to the blood through the walls of the intestine. Also, when something is smaller, it has a larger surface area so it is easier for other enzymes and molecules to act on them.
because it is irreversible and total new products are formed..
Yes, because of gastric acid
yes
Digesting food is a chemical change.
Its a chemical change.
Its a chemical change.
Food digestion is a chemical change. Chemical reactions catalyzed by enzymes break down the food ingested into its component particles and these particles cannot be put back together through mechanical means.
Chemical property
a chemical change
it depends on how you look at it. its primarily chemical because without the chemicals in your body like pancreatic juices and hydrochloric acid, you could'nt break them down. but physically you chew your food before you swallow it for those chemical processes to occur. its safe to say however that the CHEMICAL part is absolutely essential for the proper digestion of food.
Chemical digestion.
Both, It physically alters the excrement and chemically changes the nutrients.
Chemical Digestion. Mechanical digestion is the chewing of your food while chemical digestion is the processes that further break down the food like your saliva and stomach acids.
im not 100% sure but i believe its a chemical change mostly because a chemical change is when the molocules themselves change to create something else and physical is when the molocules only rearange themselves they don't change at all. seeing as how when you digest you do change whatever you have eaten by breaking it down with the acids in your stomach turning it into what comes out next.
Chemical digestion