Chemical substance In organic chemistry, there can be more than one chemical compound with the same composition and molecular weight. Generally, these are called isomers. Isomers usually have substantially different chemical properties, and often may be isolated without spontaneously interconverting. A common example is glucose vs. fructose. The former is an aldehyde, the latter is a ketone. Their interconversion requires either enzymatic or acid-base catalysis. However, tautomers are an exception: the isomerization occurs spontaneously in ordinary conditions, such that a pure substance cannot be isolated into its tautomers, even if these can be identified spectroscopically or even isolated in special conditions. A
Chemical endangerment Chemical endangerment Chemical endangerment is the crime of exposing a child to a controlled substance or an environment in which it is produced. It was added to the Alabama legal code in 2006, with the intention of protecting children from methamphetamine laboratories. Since then, it has been used to prosecute women who give birth to children that test positive for harmful drugs and also THC, the active ingredient in marijuana. Section 26-15-3.2 of the Alabama legal code discusses the crime of "chemical endangerment of exposing a child to an environment in which controlled substances are produced or distributed." It is