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.
Are these chemical or physical properties? 1. red color 2. density 3. flammability 4. solubility 5. reacts with acid to form hydrogen 6. supports combustion 7. bitter taste 8. melting point 9. reacts with water to form a gas 10. reacts with a base to form water 11. hardness 12. boiling point 13. can neutralize a base 14.