Polymer definition gcse
Webpolymer: [noun] a chemical compound or mixture of compounds formed by polymerization and consisting essentially of repeating structural units. WebFeb 12, 2024 · Monomer Definition. A monomer is a small molecule that reacts with a similar molecule to form a larger molecule. It is the smallest unit in a polymer, which is often a macromolecule with high molecular weight. Monomers are the building blocks for biological macromolecules such as DNA, RNA, proteins and carbohydrates.
Polymer definition gcse
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http://www.gcsescience.com/o56.htm WebFeb 16, 2024 · 1. Process of adding monomers to a growing chain. 2. Formation of a disulphide bond between two amino acids. 3. Process of removing monomers from a chain. 4. Interaction of two molecules by hydrogen bonding. Correct.
WebJan 16, 2024 · Elastomers are elastic materials with high flexibility and low strength molecular bonds (like rubber). Polymer fibers consist of polymer chains that have stronger molecular bonds than elastomers. Fibers are more rigid and less elastic than elastomers and can be composed of both natural and synthetic materials. Thermoplastics are more rigid … WebPolymers are large molecules built by linking 50 or more smaller molecules called monomers. Each repeat unit is connected to the adjacent units via covalent bonds. Some …
WebThis video covers:- What condensation polymers are - How they're made from dicarboxylic acids and diols - How the monomers join together (ester bonds)- How ... WebSep 7, 2024 · Wofford College. The mechanical properties of polymers are one of the features that distinguishes them from small molecules.. The mechanical properties of a polymer involve its behavior under stress. These properties tell a polymer scientist or engineer many of the things he or she needs to know when considering how a polymer …
WebPolymers provide a readily available, cheap alternative to many metal, glass, paper and cardboard materials in everyday use; The low reactivity of many polymers makes them ideal for certain uses, e.g. food packaging, but at the same time creates problems with their disposal as a lot of polymers are non-biodegradable. There are many published articles …
WebOct 16, 2024 · A concise lesson presentation (19 slides) which looks at meaning of the key term, polymers, and briefly explores addition and condensation polymers. The lesson begins with a fun exercise to enable students to come up with the word polymers so that they can be introduced to the definition and then relate this to another term, monomers. harvard philosophy classesWebMost polymers, including poly (ethene) and poly (propene) are not biodegradable. This means that microorganisms cannot break them down, so they: cause a litter problem if … harvard photographyWebPoly (ethene) is a polymer made from a very large number of ethene molecules combined together. The C=C double bond in ethene is involved in the polymerisation reaction. It … harvard philosophy placementWebGCSE Chemistry Key Words Halogens: The elements in Group 7 of the periodic table. Ion: An atom or molecule with an electric charge due to the loss or gain of electrons. Isotope: Atoms of the same element with the same number of protons but a different number of neutrons. Mass number: The total number of protons and neutrons in the nucleus. Metals: Elements … harvard philosophy phd programWebPolymers are made from many smaller molecules, called monomers. These monomers (the starting materials) are often alkenes. The process (chemical reaction) that turns … harvard phone numberWebOct 13, 2024 · Even the DNA in your cells is a polymer. By definition, polymers are large molecules made by bonding (chemically linking) a series of building blocks. The word polymer comes from the Greek words for “many parts.”. Each of those parts is scientists call a monomer (which in Greek means “one part”). harvard philosophy lecturesWeb2.3. Example of the application of the polymer definition Table 1 exemplifies the polymer definition: based on the production method described in section 2.1, several descriptions are proposed. ! Polymer definition . A polymer is a substance consisting of molecules characterised by the sequence of one or more types of monomer unit. harvard philosophy reading list