Polymer definition gcse
WebMost 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 … WebThe word polymer is derived from the Latin words poly, meaning many, and mer meaning parts. Polymers are long chained molecules formed by joining together many small reactive molecules called monomers ( mono and mer, meaning one part). Polymers are macromolecules due to their very large sizes and high molecular masses.
Polymer definition gcse
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WebThe breaking down of long-chained hydrocarbons to form a mixture of smaller molecules (monomers) polymerisation. a chemical reaction joining monomers in long chains to form … Webpolymer: [noun] a chemical compound or mixture of compounds formed by polymerization and consisting essentially of repeating structural units.
WebThe main difference between addition and condensation polymerisation is that in addition polymerisation the polymers are formed by the addition of monomer with no by-products whereas in condensation polymerization, the polymers are formed due to the condensation of more than one different monomers resulting in the formation of small molecules such … 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 …
WebThe DNA polymer is made from four different types of monomer, which are called nucleotides. ... GCSE Subjects GCSE Subjects. Art and Design; Biology (Single Science) … WebThere are two methods by which polymers are made: Addition polymerisation. Condensation polymerisation. In addition polymerisation, alkenes add to themselves. As this addition proceeds further a long molecular chain is formed. The alkene is the repeating unit in the chain (the monomer). The chain itself is the polymer.
WebA plasticizer ( UK: plasticiser) is a substance that is added to a material to make it softer and more flexible, to increase its plasticity, to decrease its viscosity, and/or to decrease friction during its handling in manufacture. Plasticizers are commonly added to polymers such as plastics and rubber, either to facilitate the handling of the ...
WebPolymers. Polymers are large molecules of high relative molecular mass and are made by linking together large numbers of smaller molecules called monomers. Each monomer is … shanklin pier caseWebFeb 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. polymer pen lithographyWebGCSE definition: 1. General Certificate of Secondary Education: a system of public exams taken in various subjects…. Learn more. shanklin park covid testingWebMost polymers are synthetic, meaning they are man-made and have been designed by chemical engineers. Different polymers are created all the time so that the demands of … shanklin old townhttp://www.gcsescience.com/o56.htm shanklin places to eatWebGCSE 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 … shanklin old village isle of wightWebSmart polymers appear in highly specialized applications and everyday products alike. They are used for sensors and actuators such as artificial muscles , the production of … shanklin news isle of wight