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Are chemical names a common name?
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Apr 4, 2020 · Chemical Common Names and Formulas. Scientific names can be long, so most people learn chemical common names. (Alex Kondratiev) Chemical names describe a substance’s composition, but we also use common names that are often associated with a property.
- Names and symbols of the Elements. Naming of chemical substances begins with the names of the elements. The discoverer of an element has traditionally had the right to name it, and one can find some interesting human and cultural history in these names, many of which refer to the element's properties or to geographic locations.
- Naming the binary molecules. The system used for naming chemical substances depends on the nature of the molecular units making up the compound. These are usually either ions or molecules; different rules apply to each.
- Naming the ions. An ion is an electrically charged atom or molecule— that is, one in which the number of electrons differs from the number of nuclear protons.
- Ion-derived compounds. These compounds are formally derived from positive ions (cations) and negative ions (anions) in a ratio that gives an electrically neutral unit.
So 1-methyl, you have a methyl group right there on that first carbon. It's a propyl chain. One, two, three, propyl, and then you would say cyclopentane. That's the systematic name for that. Now if you look at this one right here, and the common name is iso-butyl, what you do is you look at where we attach.
- 14 min
- Sal Khan
- Actually IUPAC generally uses systematic naming, but for certain cases they have retained the older 'common' naming conventions. Butyl is one of th...
- That's not very big. The longest name is 189,819 letters long for titin (a protein). I fear, it's full name won't fit this window so you'd better g...
- They are structural isomers of each other. n-Butyl (normal butyl) is a straight 4 carbon chain, and as a substituent it is attached from its first...
- Hey I read this question and realized I didn't have a true in-depth understanding of how "iso" fits into everything. For example, tert-butyl has a...
- Valentine, when trying to name the BRANCH you have to approach the compound from the point at which it's attached to the main structure (in this ca...
- The systematic, because you don't have to remember too many prefixes
- The one at 5:35, he drew a giant Y. For each end points of the Y, it has C on it, then in the middle of the Y, there's another C there too. Making...
- I'm sure Sal will cover this in the later lessons but you have to be careful about your longest chain of carbons when your dealing with non-cyclo c...
- Systematic Or IUPAC Name
- Common Name
- Vernacular Name
- Archaic Name
- CAS Number
- Other Chemical Identifiers
- Example of Chemical Names
The systematic name also called the IUPAC name is the preferred way to name a chemical because each systematic name identifies exactly one chemical. The systematic name is determined by guidelines set forth by the International Union of Pure and Applied Chemistry(IUPAC).
A common name is defined by the IUPAC as a name that unambiguously defines a chemical, yet does not follow the current systematic naming convention. An example of a common name is acetone, which has the systematic name 2-propanone.
A vernacular name is a name used in a lab, trade or industry that does notunambiguously describe a single chemical. For example, copper sulfate is a vernacular name which may refer to copper(I) sulfate or copper(II) sulfate.
An archaic name is an older name for a chemical that predates the modern naming conventions. It's helpful to know archaic names of chemicals because older texts may refer to chemicals by these names. Some chemicals are sold under archaic names or may be found in storage labeled with the older names. An example of this is muriatic acid, which is the...
A CAS numberis an unambiguous identifier assigned to a chemical by the Chemical Abstracts Service (CAS), a part of the American Chemical Society. CAS numbers are assigned sequentially, so you can't tell anything about the chemical by its number. Each CAS number consists of three strings of numbers that are separated by hyphens. The first number con...
Although the chemical names and CAS Number are the most common way to describe a chemical, there are other chemical identifiers you may encounter. Examples include numbers assigned by PubChem, ChemSpider, UNII, EC number, KEGG, ChEBI, ChEMBL, RTES number and the ATC code.
Putting it all together, here are the names for CuSO4·5H2O: 1. Systematic (IUPAC) Name: copper(II) sulfate pentahydrate 2. Common Names: copper(II) sulfate, copper(II) sulfate, cupric sulfate, cupric sulfate 3. Vernacular Name: copper sulfate, copper sulfate 4. Archaic Name: blue vitriol, bluestone, copper vitriol 5. CAS Number: 7758-99-8
- Anne Marie Helmenstine, Ph.D.
Common name : A nomenclature system useful for naming simple organic molecules . It often fails for more complex molecules , in which case systematic or (better yet) IUPAC nomenclature is preferable. The prefix " n -" (or normal) is used when all carbons form a continuous, unbranched (linear) chain.
Common Names. Some compounds have been known for so long that a systematic nomenclature cannot compete with well-established common names. Examples of compounds for which common names are used include water (H 2 O), ammonia (NH 3 ), and methane (CH 4 ). Naming Ionic Compounds. (Metals with Non-metals)
Chemical nomenclature is a set of rules to generate systematic names for chemical compounds. The nomenclature used most frequently worldwide is the one created and developed by the International Union of Pure and Applied Chemistry (IUPAC).
