Definition: Compound, composition refers to the combination or union of substances that are composed of the same elements, typically in a specific order. The term "compound" refers to a compound that combines two or more simpler substances, while "composition" refers to the composite nature of substances, meaning that they consist of multiple components or parts. In the context of chemistry and biological sciences, compounds are often referred to as molecules, which have one or more atoms bonded together by bonds. They can be classified into various classes depending on their molecular structure: - Alkanes (a type of compound) - These are non-ionic substances composed of only two different atoms. - Alkenes (another type of compound) - A broader class, alkane compounds contain one carbon atom and all other atoms are hydrogen or oxygen. Examples include propane, ethene. - Ethers (biphenyls) - These molecules have four atoms each bonded to another by a single bond. They are composed of two hydrocarbons: a benzene and an ethane. In the field of materials science, compounds are also used to describe physical properties, such as density, conductivity, or thermal conductivities. For instance, in the study of insulators, compound states (e.g., superconductors) could be described by the presence of certain molecules with very specific properties. Additionally, "composition" can be extended to include the nature of an object itself, referring to its shape and size.
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