Open Access Polymer Science Journal - use key words specific to the question and … The reagent used to initiate the polymerization reaction. Our body too is made up of many natural polymers like nucleic acids, proteins, etc. The identity and amount of the reagent used to crosslink the polymer chains. Small Molecules like glucose ==> Natural Polymers = Macromolecules like starch Carbohydrates (this page), Proteins and Oils & Fats are the main nutrient constituents of food. [Greek polumerēs, consisting of many parts : polu-, poly- + meros, part; see (s)mer- in Indo-European roots.] The tagging of seahorses is a delicate process because they have rigid bodies, prehensile tails and small fins. This can be heated and bent using a line bender and, as it is a thermoforming polymer, it can then be reheated and reshaped. BBC Bitesize - Atoms. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 12. These monomers (the starting materials) are often alkenes. Other articles where Linear polymer is discussed: man-made fibre: Linear, branched, and network polymers: …a polymer with a simple linear structure is formed. Figure: 5 Example of a homologous series of alkanes with structure of CnH2n+2, Ivy Rose, (n.d) 2.4, 2.5 – As alkanes are saturate hydrocarbons, they are deemed unreactive due to containing single bonds such as C-H and C-C bonds which are quiet strong and difficult to break due to the strong intermolecular force. Polylactic acid, or polylactide (PLA) is a thermoplastic polyester with backbone formula (C 3 H 4 O 2) n or [–C(CH 3)HC(=O)O–] n, formally obtained by condensation of lactic acid C(CH 3)(OH)HCOOH with loss of water (hence its name). Open Learn - Introduction to polymers. O2. Polymers are used in scores of industries for countless beneficial purposes, but no advances in polymer science are more striking than those in modern medicine. Structure Like alkenes and alkanes, ethanol is another type of organic (carbon-based) compound. A shape memory polymer can change from a temporary shape that is achieved by deforming it, to a previous shape which is its permanent shape when it is not being deformed. Recognise that the use of polymers are related to their properties. The properties of a polymer can be changed in a number of ways.. 1. Shape memory polymers are polymer materials that you can deform and then by applying a stimulus, such as heat or light, will return to its previous shape. Polymers are encountered in everyday life and are used for many purposes! Essential Chemistry Industry Online - Polymers, an overview. Chain length.2. BBC Bitesize - The periodic table . BBC Bitesize- What is the periodic table? Gelfand Centre - What is a polymer? Study 6 5.2 BBC - GCSE Bitesize - Polymers flashcards from Arthur T. on StudyBlue. In some polymers shorter chains grow off the long chain at certain intervals, so that a branched structure is formed. Start studying bbc bitesize Polymers. The researchers have developed a novel technique that allows them to tag the creatures without the need for risky continual adjustments. Ethanol is a two-carbon length alcohol. Home; About Us. mer (pŏl′ə-mər) n. Any of numerous natural and synthetic compounds of usually high molecular weight consisting of up to millions of repeated linked units, each a relatively light and simple molecule. Naturally Occurring Molecules from plants and animals. Polymers 9 Q56-58 2.3.2 BBC Bitesize The uses of polymers Giant Covalent Structures 10 Q45 Properties of covalent compounds Properties of metals and alloys Q45 BBC Bitesize The properties and uses of metals Metals as sonductors Q46-49 Diamond Q60-61 Structure of diamond and graphite Graphite 11 Q62 BBC Bitesize Properties and structure of graphite BBC - GCSE Bitesize: Structure And Properties Of Polymers - Higher . Polymers - Polymers - AQA - GCSE Design and Technology ... A popular polymer to use in schools is acrylic. Written by teachers for the Edexcel IGCSE Chemistry course. Polymer, any of a class of natural or synthetic substances composed of very large molecules that are multiples of simpler chemical units. A polymer is a molecule, made from joining together many small molecules called monomers.The word "polymer" can be broken down into "poly" (meaning "many" in Greek) and "mer" (meaning "unit"). What are the Properties of Polymers?. GCSE Science resources, videos, web links and workbooks for GCSE Chemistry revision & homework help. Cross linking.. Chain Length.. A polymer molecule is a long chain of (mainly carbon) atoms. Head Master's Welcome; Happy Christmas from King's; Vision and Values; The School History; Staff; Policies; Ofsted; Governance; Statutory Information The structure also includes some unsaturated long chain unsaturated aliphatic … Here is an example. Products from Oil. It can also be prepared by ring-opening polymerization of lactide [–C(CH 3)HC(=O)O–] 2, the cyclic dimer of the basic repeating unit. The monomer polymerized or the monomers copolymerized. Polymers are extensively found in nature. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Polymers are made from many smaller molecules, called monomers. What are some items made from polymeric materials that you frequently use? In-text: (BBC - GCSE Bitesize: Structure and properties of polymers - higher, 2014) Your Bibliography: Bbc.co.uk. Crystallinity.4. Addition polymers are formed by the joining together of many monomers that contain C=C bonds. Food Technology Vitamin loss during cooking (through heat and water). Polymers C2 Quick all you need to know styled mindmap with the most useful information from BBC Bitesize, Collins AQA revision guide and some other notes... 3.0 / 5 based on 1 rating Get ready for your exams Easily find curriculum specific exam paper questions as well as full past papers Aromatics, Amines, Amino Acids,Polymers. new aqa science gcse chemistry revision guide Oct 25, 2020 Posted By Robin Cook Publishing TEXT ID 245f87a2 Online PDF Ebook Epub Library edition higher perfect revision for mocks and exams in 2021 and 2022 cgp gcse chemistry 9 1 revision by cgp books … 2014. BBC Bitesize – Designer polymers. Each polymer molecule is a long chain of (mainly carbon) atoms. All alcohol molecules possess at least one C-OH group, which is known as the functional group (gives the compound its properties). A monomer is a repeating chemical unit. The following variables can be controlled when producing a polymer. GCSE Chemistry - GCSE Revision Buddy. Plasticizers.. 3. A BBC/Open University production 1.20 Polymer Engineering Manufacturing with Polymers Modern plastics have a surprising effect on product design, as the experience of an electronics manufacturer shows - and there's an intriguing insidestory. One of the bonds in each C=C breaks and forms a bond with the adjacent monomer. Click on the resources below. How the loss can be prevented. Higher and lower power points and lesson plans with resources for each. The temperature and pressure at which the polymerization occurs The polymer formed contains only carbon carbon single bonds. Fifty thousand leather-clad bikers make romance come true as they converge, from all over the States and beyond, on Sturgis, a sleepy farming town in South Dakota. Polymers are very large molecules (sometimes called macromolecules). Many polymers can be … Medical applications range from important day-to-day products such as latex gloves, bandages, and tubing, to applications as advanced as self-tying sutures, implantable medical devices, and artificial joints. These polymers are formed either by the process of addition polymerization or condensation polymerization. ... Recall that polymers are made from small molecules called monomers joined together in very long chains. Amines; Amino acids; Aromatic organic compounds; Phenols Polymers are chains made of monomer subunits. Start studying bbc bitesize Ionic compounds. This is a complex crosslinked polyester of 9,10,16-trihydroxy-exadecanoic acid (aleuritic acid). The Cellulose is another natural polymer which is a main structural component of the plants. 18.00: Bad Blood Riding the Iron Horse - a roaring, full-throated Harley Davidson - across the open prairie is an American dream. Producer PHILIP ASHBY A BBC/Open University production 1.45 Pages from Ceefax 2.0 Scene Football Fans Abroad Polymers make up many of the materials in living organisms, and they constitute the basis of certain minerals and human-made materials, such as paper and plastics. The properties of a polymer (or any other material) include strength, stiffness, hardness, density and melting point.. Title: Thermosetting plastics Created Date: 10/7/2006 1:42:28 PM In other polymers the branches become numerous and cross-link to other polymer chains, thus forming a network structure. Detailed revision notes on the topic Experiment: Finding Formulae of Compounds. Naturally occurring miscellaneous polymers, like, for instance, shellac, a resin secreted by the lac insect. Easily access all the resources you need within Revisio - direct links to exam board specifications, past papers and top quality resources from BBC Bitesize. KS3 Polymers for the new national curriculum. The chemical name for Vitamin C. Food storage, food hygiene and cross contamination Functions of starchy carbohydrates in the body Healthy Eating guidelines and meal planning for young children exprart Heat transfer methods (conduction, convection and radiation) The structure and chemical composition of the polymer chain determines the physical properties of the material. BBC Bitesize - GCSE Chemistry - Products and effects of combustion - Activity From www .bbc .co .uk - April 25, 2015 11:35 AM A secondary school revision resource for Edexcel GCSE Science about products and effects of combustion Properties of Polymers . , shellac, a resin secreted by the lac insect Iron Horse - a roaring, Harley... 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