Most attacks of pancreatitis are caused by gallstones that block the flow of pancreatic enzymes or by excessive amounts of alcohol. Sudden (acute) pancreatitis may happen after a drinking binge or after many episodes of heavy drinking. Other causes of acute pancreatitis are: Infections, including mumps.
Density as a Characteristic Property. The density of a substance is a characteristic of that substance. Therefore, density is a property that can be used to help identify a substance. Properties used to help identify substances are called characteristic properties. Characteristic properties are not affected by the amount or shape of a substance: A bolt made from iron will have the same characteristic properties as the hull of an iron ship or a piece of iron railing.
A physical property is any property that is measurable whose value describes a state of a physical system. The changes in the physical properties of a system can be used to describe its transformations or evolutions between its momentary states. Physical properties are often referred to as observables. They are not modal properties. Physical properties are often characterized as intensive and extensive properties.