Small Cell Lung Cancer Life Expectancy. In small cell lung cancer 'extensive stage', the average life expectancy is believed to be 9 to 12 months; and if the person does not opt for proper treatment, it can go down to 4 to 6 months.Advertisement.isten. In small cell lung cancer 'extensive stage', the average life expectancy is believed to be 9 to 12 months; and if the person does not opt for proper treatment, it can go down to 4 to 6 months.
A chemical element bonded to an identical chemical element is not a chemical compound since only one element, not two different elements, is involved. Examples are the diatomic molecule hydrogen (H 2) and the polyatomic molecule sulfur (S 8).
A compound is a pure substance that is made up of two or more different elements that are chemically combined. Several common compounds include water (H2O), limestone (CaCO3), salt (NaCl) and carbon dioxide (CO2). It is not easy to separate the elements in a compound because it requires a chemical reaction.his ability to react to oxygen to form rust is called a chemical property. A chemical property is a characteristic that can only be determined by changing the chemical identity of a substance. What we started with was iron, but when it reacts with the oxygen in the air, it turns into iron oxide, or rust.