Polymers aqa
WebApr 9, 2024 · This video covers:- Examples of polymers that occur naturally, including:- Polypeptides, which are made of amino acids- DNA, which is made of nucleotides - C... WebProperties. Uses. Low density poly (ethene), LDPE. Flexible, unreactive, can be made into films. Most carrier bags, bubble wrap. High density poly (ethene), HDPE. Strong, flexible, … is an example of corrosion. It occurs when iron or steel reacts with oxygen and … The main stages in the Haber process. In the Haber process: nitrogen (extracted … Life cycle stage Plastic carrier bags Paper carrier bags; Raw materials: Crude oil is a … Water is essential for life. Water that is safe for humans to drink is called potable … The human population is growing very quickly and many people argue that …
Polymers aqa
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Weba) In addition polymers the repeating unit has more atoms than the monomer. b) Only one molecule is formed in a polymerisation reaction (2 marks) Q5: Draw a diagram to represent the polymer for the monomer, ethene. (3 marks) Small Large Polymers Monomers WebPolymers are a special class of hydrocarbon molecule.Unlike the majority of the families of molecules so far studied, polymers do not exist as simple molecules.Instead, polymers …
WebFeb 3, 2024 · 3.12. Polymers There are two types of polymerisation: addition and condensation Addition Polymerisation An addition polymer forms when unsaturated … WebDownload or read book AQA GCSE 9 1 Design and Technology Timber Metal Based Materials and Polymers written by Bryan Williams and published by . This book was …
WebAddition polymerisation is the reaction in which many monomers containing at least one C=C double bond form long chains of polymers as the only product. Just like in other … WebDisposable nappies have a pad containing a special polymer called a hydrogel. Hydrogels absorb water. A company called Aqanaps compared the water absorption of its nappy pads with nappy pads made by other companies. € € € € •€€€€€A scientist from Aqanaps poured 100 cm3 of water onto the pad of one of their nappies.
WebDec 1, 2015 · The advantages and disadvantages of different methods of disposal of polymers, including recycling. Students should be able to: explain why polyesters and …
WebPolymers are the giant molecules formed by joining together of hundreds or thousands of smaller molecules. They belong to the category of macromolecules. The word polymer is … sickness in 2022WebC4.2 What are the different types of polymers? C4.2.3 explain the basic principles of condensation polymerisation by reference to the functional groups of the monomers, the … sickness in dogsWebEnzymes Aqa gcse biology exam style questions b1 cell structure and transport gcse notes poly ethene poly propene poly chloroethene June 22nd, 2024 - Revision notes on the … sickness in dogs symptomsWebThe properties of a polymer also depend on the reaction conditions in which the polymer was created.This includes the temperature and pressure of the reaction. Polymers can be … sickness in childrenWebMaterial categories and properties - polymers and textiles. No deck description has yet been added by the author. 8 cards More about. DT GCSE AQA. School Unspecified Program … sickness in children at nightWebAddition polymers. As explained in the prevgious section, an addition reaction involves two molecules joining together with nothing lost. Poli = many (Greek), meros = 1 part of a whole (Greek), polymer = large unit made up of many identical small units. Hence addition polymerisation is the process of forming a giant structure from many small ... sickness in notice periodWebDec 29, 2024 · File previews. docx, 114.73 KB. docx, 109.32 KB. Selection of exam questions from AQA that are useful when teaching the C11 topic in the new AQA Chemistry … sickness in other words