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 chemical property is a characteristic of a pure substance that describes its ability to change into different substances. For example, a chemical property of methane is that it can catch fire and burn in air. Physical properties can be observed or measured without changing the composition of matter.