When there is food in the stomach the pH can raise to as high as 4-5. After the food leaves the stomach bicarbonate ions are secreted to neutralize and alkalinize the mixture. The pH of the small intestine is approximately 8. As far as how long food stays in your stomach it depends on what that food is.
Rating Newest Oldest. Best Answer: B Malleability A chemical property is one you can observe during a chemical reaction. Malleability really has nothing to do with chemical reactions, and afterwards you still have the same substance, nothing is chemically changed. Source(s): Col. S Â· 7 years ago.
Unsourced material may be challenged and removed. (December 2009). A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.hemical properties can be used for building chemical classifications. They can also be useful to identify an unknown substance or to separate or purify it from other substances. Materials science will normally consider the chemical properties of a substance to guide its applications.