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.
Iron requires considerably more effort to pound into a sheet and is therefore less malleable. Yet, both are metals. In contrast, non-metallic elements, such as carbon or sulfur, shatter into pieces when hammered. Malleability is a valuable property because it allows metals to be shaped into useful forms.Pure gold is the most malleable metal. Silver, aluminum, lead, tin, and copper are also very malleable. Heating usually increases malleability.For instance, zinc, at standard temperatures is brittle, but becomes malleable at temperatures between 248Â°F (120Â°C) and 302Â°F (150Â°C).ron requires considerably more effort to pound into a sheet and is therefore less malleable. Yet, both are metals. In contrast, non-metallic elements, such as carbon or sulfur, shatter into pieces when hammered. Malleability is a valuable property because it allows metals to be shaped into useful forms.