long-chain molecule
Noun: 1. (Chemistry) A relatively long chain of atoms in a molecule: A molecule characterized by having a backbone or primary structure consisting of a sequence of many atoms (typically carbon atoms) linked together in a linear or branched fashion. These molecules often have distinct physical properties compared to smaller molecules.
The term "long-chain molecule" is used to describe and categorize molecules based on the length of their primary atomic chain. It is a comparative term; what constitutes "long" depends on the context of similar molecules. * Fats and oils are classified by whether they contain long-chain molecules or medium-chain molecules. * The physical properties of a polymer, such as its flexibility and melting point, are determined by its structure as a long-chain molecule.
- Polyethylene is a synthetic long-chain molecule composed of repeating ethylene units.
- Many plastics are formed from long-chain molecules called polymers.
- A fatty acid with more than 12 carbon atoms is considered a long-chain molecule.
- In biochemistry, long-chain molecules like DNA and proteins are essential for life, storing genetic information and performing cellular functions.
- The behavior of long-chain molecules in solution, such as their viscosity and how they tangle, is a key area of study in polymer science.
- Polymer (n): A substance composed of very large molecules (macromolecules) formed by repeating structural units (monomers). All polymers are long-chain molecules, but not all long-chain molecules are synthetic polymers (e.g., natural rubber, DNA).
- Macromolecule (n): A molecule of high relative molecular mass, the structure of which essentially comprises the multiple repetition of units derived from molecules of low relative molecular mass. This is a more formal and encompassing term for a long-chain molecule.
- Oligomer (n): A molecule that consists of a few monomer units (e.g., a dimer, trimer). This term describes a chain molecule that is shorter than a typical polymer or long-chain molecule.
- Macromolecule (in many, but not all, contexts)
- Polymer (for synthetic or natural repeating-chain structures)
- Long-chain compound: A synonym often used interchangeably with "long-chain molecule."
- Chain length: Refers to the number of atoms (often carbons) in the primary chain of the molecule.
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(chemistry) a relatively long chain of atoms in a molecule
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