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.
What are the physical properties of acids? A: Physically, acids have a sour taste, are soluble in water, turn blue litmus paper red, are corrosive, have pH values less than 7 and conduct electricity. These physical properties of acids are a byproduct of the acids' chemical properties. Acids can be solutions or pure substances and can be either solid, liquid or gaseous in nature.