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.
An element/compound having a sour taste is a chemical property because it is an evidence that it is an acid. Being an acid tells us that it will react to a base when combined. The last option is also a chemical property because it tells that it reacts with an acid to form H2 gas. The chemical property of element/compound distinguishes it to another. Density and luster is a physical property because its value depends physically. A decrease in mass will result to a change in density.