Polymerisation Study guides, Class notes & Summaries

OCR A Level Chemistry Exam Questions With Complete Solutions acid - CORRECT ANSWER A species that is a proton donor. activation energy - CORRECT ANSWER The minimum amount of kinetic energy that particles need to have in order to react when they collide addition polymer - CORRECT ANSWER A very long molecular chain formed by repeated addition reactions of many unsaturated alkene molecules (monomers). addition polymerisation - CORRECT ANSWER T...

OCR AS LEVEL CHEMISTRY B PAPER 2 JUNE 2022 QUESTIONS ONLY 1 Natural rubber is a polymer of 2-methylbuta-1,3-diene. H3C H2C CH2 C C H 2-methylbuta-1,3-diene (a) Draw the skeletal formula of 2-methylbuta-1,3-diene. [1] (b) The carbon-carbon double bond consists of both a sigma(σ) and a pi(π) bond. (i) The diagram of ethene below shows the position of the sigma(σ) bond between the carbon atoms. On the diagram sketch the shape and position of the pi(π) bond. H H C C H H σ bond ...

Mars 1 AO1 4.9.1.2 20% 1 AO1 and plants evolved photosynthesis took place 1 1 AO1 4.9.1.39.1.1 (y-axis labelled) 5, 10, 15, (20) oxygen bar drawn to 16% allow (y-axis labelled) 4, 8, 12, 16, (20) ignore correct intermediate values allow a tolerance of ± 1⁄2 a small square 1 1 AO2 4.9.1.3 test tube A 1 AO2 4.6.1.2 a glowing splint 1 AO1 4.8.2.2 manganese dioxide is a catalyst in this reaction 1 AO2 4.6.1.4 (the poly(propene) beaker will begin ...

OCR A Level Chemistry Exam Questions With 100% Correct Answers Acid - answerA species that is a proton donor. activation energy - answerThe minimum amount of kinetic energy that particles need to have in order to react when they collide addition polymer - answerA very long molecular chain formed by repeated addition reactions of many unsaturated alkene molecules (monomers). addition polymerisation - answerThe process in which unsaturated alkene molecules (monomers) add on to a growing po...

10 - LCAs, water with complete solutions What does the life cycle assessment (LCA) of product do? - correct answer Assesses the environmental impact of a product during each stage of its production process What is the process of the production of a product? - correct answer 1. Getting raw materials 2. Manufacture and packaging 3. Using the product 4. Disposing the product What are the environmental impacts of getting raw materials? - correct answer 1. damage the local environment (mi...

AQA GCSE CHEMISTRY 8462/2F Paper 2 Foundation Tier Version: 1.0 Final *JUN2384622F01* IB/M/Jun23/E15 8462/2F For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL Tuesday 13 June 2023 Morning Time allowed: 1 hour 45 minutes Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the bo...

Semmelweis Entrance Exam Medicine Biology 2023 Guide with complete solution What are carbohydrates and lipids? Organic compounds that are mostly composed of three types of atom; carbon, hydrogen and oxygen What do carbohydrates do? provide energy, in the form of sugars like glucose and fructose, but they also make up structures like cellulose, which form the cell wall of plant cells What type of carbohydrate is the most important source of energy? mono-, di- and poly-saccharides What ar...

AQA AS BIOLOGY REVIEW TEST Monomer - ANSWER One of many small molecules that combine together to form a polymer Polymer - ANSWER Large molecule made up of many repeating smaller molecules (monomers). Polymerisation - ANSWER The process of making a polymer Condensation - ANSWER Chemical process in which two molecules combine to form a more complex one with the elimination of a simple substance, usually water. Many biological polymers (e.g. polysaccharides, polypeptides) are formed b...

Semmelweis Entrance Exam Medicine Biology 2023 Guide with complete solution What are carbohydrates and lipids? Organic compounds that are mostly composed of three types of atom; carbon, hydrogen and oxygen What do carbohydrates do? provide energy, in the form of sugars like glucose and fructose, but they also make up structures like cellulose, which form the cell wall of plant cells What type of carbohydrate is the most important source of energy? mono-, di- and poly-saccharides What ar...

2 © OCR 2023 1 Poly(ethene) is a polymer which forms when ethene monomers react together in an addition polymerisation reaction. The structure of an ethene monomer and the repeating unit of poly(ethene) are shown in Fig. 1.1. Fig. 1.1 H H H H C C C C H H H H Ethene monomer Repeating unit of poly(ethene) (a) Which statements are true only for an ethene monomer, which are true only for the repeating unit of poly(ethene) and which are true for both? Tick () one box in each row. Tru...