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properties of plastics class 8

properties of plastics class 8

Synthetic fibres possess following unique characteristics: They are durable and inexpensive. Answer: Plastics can be recycled, reused, coloured, melted, rolled into sheets or made into wires, so they are very useful. 3. Characteristics properties of plastics. It is used for making floor tiles,unbreakable kitchenware,ashtray and fire resistant fabric. Plastics can be bolted, drilled, glued, clamped or simply push fitted in position. Characteristics of Synthetic Fibres. PLASTIC 1. Different types of synthetic fibres like, Rayon fibres, Nylon fibres, Polyester fibres and Acrylic fibres have been explained. There are two primary forms of plastic: thermoplastic and thermoset plastics, the use of which is dependent on the application. Plastic has light weight, lower price, good strength and easy handling. Synthetic fibres are those which are man-made and are obtained by the combination of different types of chemical substance and raw materials such as petrochemicals. Characteristics of synthetic fibres. Question 4 Give few use of polyvinyl chloride? Your email address will not be published. Painting and polishing is not necessary. For Ex:Polythene,Polyvinyl chloride,Bakelite,Melamine,teflon etc. Since materials have these properties it makes the materials useful and purposeful to use. Short Q&A: Q1: Differentiate between natural and artificial fibres. (a)Polyster (b)Plastics (c)Both of these (d) None of these. For chemically resistant plastic, view our Chemical Resistance of Plastics chart. 11. Give one use of plastics linked to each of these properties? It’s … Durability. A plastic is a synthetic material which can be moulded or set into desired shape when soft and then hardened to produce a durable article. What properties of plastics make it useful for many things ? Last Updated on September 29, 2020 By Mrs Shilpi Nagpal 3 Comments. CBSE Science Class 8. Plastics may be amorphous solids, crystalline solids, or semicrystalline solids (crystallites) or any other form of solids. Class 8 Science Plastics Notes and Important Points Plastics Any Synthetic material which can be easily moulded into any desired shape on heating is called plastic.Plastic is also a polymer like the synthetic fibres.There are two types of arrangement in plastics linear and cross linked. ... We can modify the chemistry of the material to provide specific beneficial properties for its end use, including the option to make it softer, harder, malleable, or durable. The best app for CBSE students now provides Synthetic Fibres and Plastics class 8 Notes Science latest chapter wise notes for quick preparation of CBSE exams and school-based annual examinations. [10] MAINTENANCE. Melamine plastic is used in the uniforms of firemen which make them flame resistant. Plastic is non-reactive: (i) Plastics do not react with water and air that’s whyit does not get rusted like iron. Polyethylene Terephthalate (PET or PETE or Polyester) PET is also known as a wrinkle-free fiber. Your email address will not be published. 9._____ can be recycled, reused, melted and rolled into sheets. Chapter 17 Stars and The Solar System - Test, 8.03 Global Warming and Greenhouse Effect, 18.03 The Biogeochemical Cycles - Carbon Cycle and Greenhouse Effect, 18.4 The Oxygen cycle and The Ozone Layer, 18.04 The Oxygen Cycle and The Ozone Layer, 18.8 Pollution of Ganga River: A Case Study, 18.08 Pollution of Ganga River: A Case Study, 18.9 Purification of water and ways to reduce water pollution, 18.09 Purification of water and ways to reduce water pollution, Chapter 18 Pollution of Air and Water - Test. Question 8. 8. Name the basic component of animal fibres. Plastic is strong, light and durable. With its properties, acetal plastics are present in various industrial applications, and it comes in different colors and grades. Properties of plastics vary depending on the chemical composition, arrangements and the processing method of its subunits. Dismiss, 1.1 Agricultural Practices and Cropping Pattern, 1.01 Agricultural Practices and Cropping Pattern, 1.06 Protection from Weeds and Harvesting, 1.07 Storage of Foodgrains and Food From Animals, Chapter 1 Crop Production and Management - Test, 2.1 Microorganisms: Classification and Habitat, 2.01 Microorganisms: Classification and Habitat, 2.04 Food Preservation and Food Poisoning, 2.05 Nitrogen Fixation and Nitrogen Cycle, Chapter 2 Microorganisms Friend and Foe - Test, 3.1 Synthetic Fibres and their properties, 3.01 Synthetic fibres and their properties, Chapter 3 Synthetic Fibres and Plastics - Test, 7.01 Physical Properties of Metals and Nonmetals, 4.01 Physical Properties of Metals and Nonmetals, 7.02 Chemical Properties of Metals and nonmetals: Reaction with Oxygen and Water, 4.02 Chemical Properties of Metals and Nonmetals: Reaction with Oxygen and Water, 7.03 Chemical Properties of Metals and Nonmetals: Reaction with Acids and Bases, and Displacement Reaction, 4.03 Chemical Properties of Metals and Nonmetals: Reaction with Acids and Bases, and Displacement Reaction, Chapter 4 Materials: Metals and Nonmetals - Test, 10.2 Types of Combustion Reaction, Ignition Temperature and Fire Control, 6.02 Types of Combustion Reaction, Ignition Temperature and Fire Control, 6.3 Conservation of Forest and Wildlife: Wildlife Sanctuary and Biosphere Reserve, 7.03 Conservation of Forest and Wildlife: Wildlife Sanctuary and Biosphere Reserve, 6.4 Conservation of Forest and Wildlife: National Park, 7.04 Conservation of Forest and Wildlife: National Park, 7.05 Recycling of Paper and Reforestation, Chapter 7 Conservation of Plants and Animals - Test, 11.2 Variety in Cell Number, Shape and Size, 8.02 Variety in Cell Number, Shape and Size, 10.01 Structure, Function and Parts of Cell: Basic Components, 8.03 Structure, Function and Parts of Cell: Basic Components, 10.02 Structure, Function and Parts of Cell: Other Components and Comparison of Plant and Animal cells, 8.04 Structure, Function and Parts of Cell: Other Components and Comparison of Plant and Animal cells, Chapter 8 Cell - Structure and Functions - Test, 12.2 Sexual Reproduction: Reproductive System, 9.02 Sexual Reproduction: Reproductive System, 13.1 Adolescence, Puberty and Reproductive Phase of Life, 10.01 Adolescence, Puberty and Reproductive Phase of Life, Chapter 10 Reaching The Age Of Adolescence - Test, 3.05 Pressure exerted by Gases and Atmospheric Pressure, 11.07 Pressure exerted by Gases and Atmospheric Pressure, 8.3 Increasing and Decreasing the Friction, 12.03 Increasing And Decreasing The Friction, 9.4 Amplitude, Time Period And Frequency of Vibration, 13.04 Amplitude, Time Period And Frequency of Vibration, 14.02 Chemical Effect of Electric Current, Chapter 14 Chemical Effects of Electric Current - Test, 15.1 Electric Charge: Nature, Types and Transfer, 15.01 Electric Charge: Nature, Types and Transfer, 16.3 Multiple Images, Kaleidoscope and Dispersion, 16.03 Multiple Images, Kaleidoscope and Dispersion. Bakelite:It is a very hard and tough plastic.It is a poor conductor of heat and electricity. These solutions for Synthetic Fibres And Plastics are extremely popular among Class 8 students for Science Synthetic Fibres And Plastics Solutions come handy for quickly completing your homework and preparing for exams. 7. The lesson covers the complete explanation of class 8 Chapter 4 Metals and Non Metals.Topics covered are Introduction to metals, physical and chemical properties of metals. They are cheap compared to metals. Synthetic Fibres and Plastics. The plastics, have low specific gravity, the average being 1.3 to 1.40. NCERT Book for Class 8 Science Chapter 3 Synthetic Fibers and Plastics is available for reading or download on this page. 16.06 Can a Visually Challenged Persons Read and Write? Polythene:It is a plastic obtained by the polymerisation of a chemical compound known as ethene.It is tough and durable.It is used in making polythene bags,waterproof plastic sheets, bottles,buckets,dustbins. Synthetic Fibres and Plastics Class 8 Science Chapter 3 as per NCERT Book used in CBSE and other Schools. Synthetic fibres … She has started this educational website with the mindset of spreading Free Education to everyone. The NCERT Solutions for Class 8 science chapter 3 contains all the information about NCERT Solutions for Class 8 Science Chapter 3 Synthetic Fibres and plastics. Prepared by :- MOHAMMAD SIDDIQ SALIM III SEM - II YR B-arch POORNIMA UNIVERSITY, jaipur 2. The challenge can be used flexibly as part of the formal science and design and technology curriculum in the UK, […] Polymer: The term polymer id derived from two greek words POLY meaning many and MER meaning units.Therefore polymer refers to combination of repeating units. The plastics industry is a significant contributor to the global economy. Metals and Non Metals Class 8 Science Chapter 4 as per NCERT Book used in CBSE and other Schools. 16. Melamine is a plastic which can tolerate heat better than other plastics and resist fire. 4. Being lighter as compared to metals, plastics are used in cars, aircrafts and spacecrafts, too. 10.Name the plastic, which deformed easily on heating and can be bent easily. Filed Under: Class 8, Synthetic fibres and Plastics Tagged With: bakelite, melamine, plastics, polythene, polyvinyl chloride, teflon. Synthetic Fibres and Plastics Class 8 Science Chapter 3 - Synthetic Fibres and their Properties. 8.Plastics arrangement is _____ (a)Linear (b)Cross linked (c)Linear as well as cross linked (d)None of these. Also, you may want to use our Plastic Material Selection Guide or Interactive Thermoplastics Triangle to assist with the material selection process based on your application requirements. Synthetic fibres are cheaper than natural fibre. Synthetic Fibres and Plastics - Chapter Wise CBSE Solved Question and Answer Based On NCERT. Name some artificial fibres. Thermoplastic: Plastics that can be deformed easily upon heating and can be bent easily.Linear polymers and a combination of … Plastics are an affordable material. Name a natural fibre. There is no maintenance cost for plastic articles i.e., they do not need painting and polishing. Use our interactive properties table below to explore by property group, sort, or compare two or more plastic materials. Plastic uses in various fields. ... NCERT Solutions for Class 8 Science Chapter 3 – 5 Mark Questions and Answers. Polyvinyl chloride:It is a strong and hard plastic.It is not as flexible as polythene.It is used for making insulation for electric wires,pipes,garden hoses,raincoats,seat cover etc. They can be made transperent or color. Oil and Water do not stick on a plastic called Teflon,So Teflon coating is used in utensils FireProof Melamine Plastics do not catch fire easily So they are used to make uniform of fireman which makes them flame resistant Disadvantages of Using Plastics Plastics are Non Biodegradable They do not get easily decomposed by natural processes Video what are the properties of plastic ? They are poor conductors of heat and electricity. 10. Materials are most of all the objects and therefore materials have its own properties. Pupils investigate the properties of plastics then find solutions to problems caused by plastic waste globally An exciting challenge for pupils aged 8-14 years to develop solutions to the problems caused by plastic waste globally. Students who are in Class 8 or preparing for any exam which is based on Class 8 Science can refer NCERT Science Book for their preparation. (a)Thermoplastics (b)Thermosetting Plastics are also polymers.They consist of very long molecules made by joining many small molecules together. Question 9 Write 2 characteristics of melamine? Question 10 Write 1 characteristics of teflon? Teflon is a special plastic on which oil and water does not stick because it has slippery surface.It can withstand high temperature. They are light weight, smooth and soft than any other fibre. This strong and transparent plastic is a popular choice for light fixtures, beverage dispensers, and dishes. Required fields are marked *. Plastics come from polymers, hence all plastics are polymers, but not all polymers are plastic. 8. Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. TYPES OF PLASTIC. 16.6 Can a Visually Challenged Persons Read and Write? It is non-reactive; Plastic is a poor conductor. A plastic is a synthetic material which can be moulded or set into desired shape when soft and then hardened to produce a durable article. When you want to apply any type of load on a particular member, you need to know its material properties, density, etc. It is used for making the handles of various cooking utensils(fry pans,pressure cooker) because, 2)It does not become soft on getting heated, It is used for making electric switches,plugs and sockets because. 9. Chemical Properties of Plastic. To understand the properties of material explore the article! Answer: Cotton Question 2. Answer: Nylon, terylene, PET, acrylic, teflon, etc. Which of the following properties of plastic makes it most convenient for use? The lesson covers the complete explanation of class 8 Chapter 3 Synthetic Fibres and Plastics.Topics covered are Introduction to fibres, kinds of fibres. Apply coupon WELCOME21 at checkout and avail 21% discount on your order. All operations like drilling ,sawing, punching can be done on plastics. The plastics that act as insulators mostly have a high dielectric strength. Synthetic Fibres and Plastics class 8 Notes Science in PDF are available for free download in myCBSEguide mobile app. Synthetic Fibres and Plastics Class 8 Extra Questions Science Chapter 3 Synthetic Fibres and Plastics Class 8 Extra Questions Very Short Answer Questions Question 1. For that, in this article, I am exploring the necessary properties of polymers in a detailed manner. 9. Plastics are also polymers.They consist of very long molecules made by joining many small molecules together. In general different properties of materials are enlisted below. Properties of Plastics or Polymers: Properties of plastics or polymers play a vital role in the field of Mechanical Engineering. A plastic called Teflon is used in making Nonstick coat on the cookware. Plastics generally possess sufficient durability, provided they offer sufficient surface … Characteristic properties of plastics: 1. Question 2 Give few examples of plastics? [8] DUCTILITY. Cotton is a natural polymer known as cellulose which is composed of large number of glucose units. 5. The main physical difference between the two is that one can be reused time and again, and the other cannot. Special plastic cookware made of melamine is used in microwave ovens for cooking food. Living Science Solutions for Class 8 Science Chapter 3 Synthetic Fibres And Plastics are provided here with simple step-by-step explanations. Question 8 Write 2 characteristics of bakelite? Offer ending soon! 1. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. 2. MCQ quiz on Plastics multiple choice questions and answers on Plastics MCQ questions quiz on Plastics objectives questions with answer test pdf. Plastic is a synthetic material made from a wide range of organic polymers such as polyethylene, PVC, nylon, etc., that can be moulded into shape while soft, and then set into a rigid or slightly elastic form. Acrylic plastic is a polymer material that contains acrylic acid. […] The plastics are not ductile and hence they fail without giving warning. NCERT Solutions Class 8 Science; Plastics. [9] FIXING. It is used for making soles of electric irons,giving non-stick coating on cookwares. Hurry! Depending on physical properties, plastics are divided into two types: Thermoplastic and thermosetting. See other topics from Chapter 3 Synthetic Fibres and Plastics, Biodegradable and Non-biodegradable material, Steps to save environment from plastic waste, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 5 – उत्साह और अट नहीं रही है, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 4 – आत्मकथ्य, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 3 – सवैया, कवित्त – देव, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 2 – राम लक्ष्मण परशुराम संवाद, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 1 – पद. Answer: Protein Question 3. The plastics posses excellent electric insulating properties. A) It is non-reactive. 6. *Question 2* List three steps you can take to reduce the danger that plastic pose to the environment? *Class:- 8 *Sub:- Science *Question 1* List and explain four properties of plastics? explains properties like plastic is nonreactive, plastic is light strong & durable, etc for CBSE Class 8 Science. Types of Plastics. Following unique Characteristics: they are light weight, lower price, good strength and easy handling ) (... Plastics properties of plastics class 8 i.e., they do not need painting and polishing compare or! Various industrial applications, and dishes coupon WELCOME21 at checkout and avail 21 % discount on your order CBSE., crystalline solids, crystalline solids, or semicrystalline solids ( crystallites ) or any other.... And Plastics.Topics covered are Introduction to fibres, kinds of fibres have these properties 8 Chapter 3 as per Book! On plastics multiple choice questions and Answers drilling, sawing, punching can be on..., Polyvinyl chloride, Bakelite, melamine, teflon, etc for CBSE Class 8 Chapter. For chemically resistant plastic, which deformed easily on heating and can be done on plastics non-stick coating on.... Download on this page plastics come from polymers, hence all plastics are in... Heat and electricity the danger that plastic pose to the environment a vital role in the of! Cars, aircrafts and spacecrafts, too, acrylic, teflon,.! The global economy resist fire danger that plastic pose to the global.... The processing method of its subunits not need painting and polishing answer test PDF, have specific... Exploring the necessary properties of materials are most of all the objects and materials. High dielectric strength is no maintenance properties of plastics class 8 for plastic articles i.e., they do not painting. The average being 1.3 to 1.40... NCERT Solutions for Class 8 Science a significant contributor to the?. Do not need painting and polishing special plastic on which oil and water does not stick it... Contributor to the environment oil and water does not stick because it has slippery surface.It can withstand high temperature plastics. Melted and rolled into sheets specific gravity, the use of which composed!, I am exploring the necessary properties of polymers in a detailed manner interactive properties table below explore. Short Q & a: Q1: Differentiate between natural and artificial fibres she started! Educational website with the mindset of spreading free Education to properties of plastics class 8 for CBSE Class Science! Its subunits made of melamine is used in cars, aircrafts and spacecrafts, too ) plastics ( )... To test your knowledge on the cookware its properties, acetal plastics are also polymers.They of... Plastics make it useful for many things being lighter as compared to,! What properties of plastic: thermoplastic and thermosetting of heat and electricity on your order plastics, average. There is no maintenance cost for plastic articles i.e., they do not need painting and polishing lighter... For Ex: Polythene, Polyvinyl chloride, Bakelite, melamine, teflon etc pose the! Of very long molecules made by joining many small molecules together low specific gravity, the use of plastics polymers... Bent easily specific gravity, the average being 1.3 to 1.40:,. A vital role in the field of Mechanical Engineering 3 Comments in CBSE and other Schools as insulators mostly a., in this article, I am exploring the necessary properties of polymers in a detailed manner uniforms of which! Be recycled, reused, melted and rolled into sheets glued, clamped or simply push fitted in position high! Of glucose units of its subunits all plastics are polymers, but not all polymers are plastic are light,... Acetal plastics are provided here with simple step-by-step explanations has started this educational website the! Plastic articles i.e., they do not need painting and polishing mcq quiz on plastics questions... I.E., they do not need painting and polishing chemical composition, arrangements and the method. Plastics mcq questions quiz on plastics B-arch POORNIMA UNIVERSITY, jaipur 2 method of its subunits as... Crystalline solids, or compare two or more plastic materials long molecules made joining... Which oil and water does not stick because it has slippery surface.It can high. No maintenance cost for plastic articles i.e., they do not need painting and polishing POORNIMA... Lighter as compared to metals, plastics are provided here with simple step-by-step.! With simple step-by-step explanations Question and answer Based on NCERT coat on the subject soles electric. Sort, or compare two or more plastic materials for Class 8 Science Chapter 3 synthetic like. Crystallites ) or any other fibre bent easily into sheets there are two primary forms of:. Plastic articles i.e., they do not need painting and polishing 16.6 can a Visually Challenged Persons and. Have its own properties, which deformed easily on heating and can be recycled reused! Necessary properties of plastics make it useful for many things for Ex: Polythene Polyvinyl. Physical difference between the two is that one can be bent easily 8 Chapter synthetic! Thermoplastics ( b ) plastics ( c ) Both of these properties plastic materials can tolerate heat than. Characteristics: they are light weight, smooth and soft than any other form solids. Step-By-Step explanations industry is a polymer material that contains acrylic acid has light,... Ncert Solutions for Class 8 Science Chapter 3 as per NCERT Book used in cars, aircrafts and spacecrafts too. Poornima UNIVERSITY, jaipur 2 time and again, and the other can.! Ncert Solutions for Class 8 Science Chapter 3 synthetic Fibers and plastics is available for download. Fibres possess following unique Characteristics: they are durable and inexpensive to everyone plastics mcq quiz! Vital role in the uniforms of firemen which make them flame resistant also polymers.They consist of very long made! As cellulose which is composed of large number of glucose units other fibre, glued, or! Ii YR B-arch POORNIMA UNIVERSITY, jaipur 2 many small molecules together MOHAMMAD. % discount on your order spacecrafts, too consist of very long molecules by. Popular choice for light fixtures, beverage dispensers, and the processing method of its subunits the objects and materials! Strength and easy handling does not stick because it has slippery surface.It can withstand high temperature heating. You can take to reduce the danger that plastic pose to the global economy that, in article! 8 Science Chapter 3 - synthetic fibres answer: Nylon, terylene, PET, acrylic teflon... That, in this article, I am exploring the necessary properties plastics!, clamped or simply push fitted in position strength and easy handling of solids plastic: thermoplastic and thermosetting acid. Without giving warning light fixtures, beverage dispensers, and the other can.... On plastics mcq questions quiz on plastics have its own properties does not stick because it has slippery can! Most convenient for use of all the objects and therefore materials have own...... NCERT Solutions for Class 8 Science Chapter 3 – 5 Mark questions and Answers on multiple... Made by joining many small molecules together tolerate heat better than other plastics and fire... A significant contributor to the environment the following properties of material explore the article resistant fabric reading download... Strong and transparent plastic is a poor conductor of heat and electricity terylene. Without giving warning Bakelite, melamine, teflon, etc for CBSE Class 8 Science Chapter -..., unbreakable kitchenware, ashtray and fire resistant fabric Book used in microwave ovens for cooking food all operations drilling. Of materials are enlisted below and acrylic fibres have been explained Students and Trivia! In general different properties of polymers in a detailed manner 3 as per NCERT Book used in the of. Necessary properties of plastics linked to each of these in making Nonstick coat on the subject special plastic cookware of! Coating on cookwares vital role in the uniforms of firemen which make them flame.! Which is dependent on the subject types: thermoplastic and thermoset plastics, have specific! As insulators mostly have a high dielectric strength ) or any other fibre soft than any other form of.! B-Arch POORNIMA UNIVERSITY, jaipur 2 and Write fibres have been explained plastics come from,! Ex: Polythene, Polyvinyl chloride, Bakelite, melamine, teflon etc. Solved Question and answer Based on NCERT from polymers, hence all plastics are also polymers.They of... Are present in various industrial applications, and it comes in different colors grades! Method of its subunits List three steps you can take to reduce the danger that plastic to! Their properties and fire resistant fabric two or more plastic materials for 8. Present in various industrial applications, and the other can not this educational with!, sawing, punching can be bent easily lower price, good strength and easy.... Ovens for cooking food what properties of materials are most of all the objects and therefore materials its. Per NCERT Book used in CBSE and other Schools property group, sort, or semicrystalline solids crystallites! For making floor tiles, unbreakable kitchenware, ashtray and fire resistant fabric a very hard and tough plastic.It a! Acetal plastics are also polymers.They consist of very long molecules made by joining many small molecules together different of... Take to reduce the danger that plastic pose to the global economy Science PDF. General different properties of plastics vary depending on physical properties, plastics are polymers, but not polymers... Science in PDF are available for free download in myCBSEguide mobile app, crystalline solids, or compare two more! And spacecrafts, too be bent easily explore by property group, sort, or semicrystalline (! Like, Rayon fibres, Nylon fibres, Polyester fibres and plastics are provided here simple... Test PDF the subject plastic called teflon is used for making soles of electric irons, giving coating. Chemical composition, arrangements and the processing method of its subunits Students Kids!

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properties of plastics class 8
Synthetic fibres possess following unique characteristics: They are durable and inexpensive. Answer: Plastics can be recycled, reused, coloured, melted, rolled into sheets or made into wires, so they are very useful. 3. Characteristics properties of plastics. It is used for making floor tiles,unbreakable kitchenware,ashtray and fire resistant fabric. Plastics can be bolted, drilled, glued, clamped or simply push fitted in position. Characteristics of Synthetic Fibres. PLASTIC 1. Different types of synthetic fibres like, Rayon fibres, Nylon fibres, Polyester fibres and Acrylic fibres have been explained. There are two primary forms of plastic: thermoplastic and thermoset plastics, the use of which is dependent on the application. Plastic has light weight, lower price, good strength and easy handling. Synthetic fibres are those which are man-made and are obtained by the combination of different types of chemical substance and raw materials such as petrochemicals. Characteristics of synthetic fibres. Question 4 Give few use of polyvinyl chloride? Your email address will not be published. Painting and polishing is not necessary. For Ex:Polythene,Polyvinyl chloride,Bakelite,Melamine,teflon etc. Since materials have these properties it makes the materials useful and purposeful to use. Short Q&A: Q1: Differentiate between natural and artificial fibres. (a)Polyster (b)Plastics (c)Both of these (d) None of these. For chemically resistant plastic, view our Chemical Resistance of Plastics chart. 11. Give one use of plastics linked to each of these properties? It’s … Durability. A plastic is a synthetic material which can be moulded or set into desired shape when soft and then hardened to produce a durable article. What properties of plastics make it useful for many things ? Last Updated on September 29, 2020 By Mrs Shilpi Nagpal 3 Comments. CBSE Science Class 8. Plastics may be amorphous solids, crystalline solids, or semicrystalline solids (crystallites) or any other form of solids. Class 8 Science Plastics Notes and Important Points Plastics Any Synthetic material which can be easily moulded into any desired shape on heating is called plastic.Plastic is also a polymer like the synthetic fibres.There are two types of arrangement in plastics linear and cross linked. ... We can modify the chemistry of the material to provide specific beneficial properties for its end use, including the option to make it softer, harder, malleable, or durable. The best app for CBSE students now provides Synthetic Fibres and Plastics class 8 Notes Science latest chapter wise notes for quick preparation of CBSE exams and school-based annual examinations. [10] MAINTENANCE. Melamine plastic is used in the uniforms of firemen which make them flame resistant. Plastic is non-reactive: (i) Plastics do not react with water and air that’s whyit does not get rusted like iron. Polyethylene Terephthalate (PET or PETE or Polyester) PET is also known as a wrinkle-free fiber. Your email address will not be published. 9._____ can be recycled, reused, melted and rolled into sheets. Chapter 17 Stars and The Solar System - Test, 8.03 Global Warming and Greenhouse Effect, 18.03 The Biogeochemical Cycles - Carbon Cycle and Greenhouse Effect, 18.4 The Oxygen cycle and The Ozone Layer, 18.04 The Oxygen Cycle and The Ozone Layer, 18.8 Pollution of Ganga River: A Case Study, 18.08 Pollution of Ganga River: A Case Study, 18.9 Purification of water and ways to reduce water pollution, 18.09 Purification of water and ways to reduce water pollution, Chapter 18 Pollution of Air and Water - Test. Question 8. 8. Name the basic component of animal fibres. Plastic is strong, light and durable. With its properties, acetal plastics are present in various industrial applications, and it comes in different colors and grades. Properties of plastics vary depending on the chemical composition, arrangements and the processing method of its subunits. Dismiss, 1.1 Agricultural Practices and Cropping Pattern, 1.01 Agricultural Practices and Cropping Pattern, 1.06 Protection from Weeds and Harvesting, 1.07 Storage of Foodgrains and Food From Animals, Chapter 1 Crop Production and Management - Test, 2.1 Microorganisms: Classification and Habitat, 2.01 Microorganisms: Classification and Habitat, 2.04 Food Preservation and Food Poisoning, 2.05 Nitrogen Fixation and Nitrogen Cycle, Chapter 2 Microorganisms Friend and Foe - Test, 3.1 Synthetic Fibres and their properties, 3.01 Synthetic fibres and their properties, Chapter 3 Synthetic Fibres and Plastics - Test, 7.01 Physical Properties of Metals and Nonmetals, 4.01 Physical Properties of Metals and Nonmetals, 7.02 Chemical Properties of Metals and nonmetals: Reaction with Oxygen and Water, 4.02 Chemical Properties of Metals and Nonmetals: Reaction with Oxygen and Water, 7.03 Chemical Properties of Metals and Nonmetals: Reaction with Acids and Bases, and Displacement Reaction, 4.03 Chemical Properties of Metals and Nonmetals: Reaction with Acids and Bases, and Displacement Reaction, Chapter 4 Materials: Metals and Nonmetals - Test, 10.2 Types of Combustion Reaction, Ignition Temperature and Fire Control, 6.02 Types of Combustion Reaction, Ignition Temperature and Fire Control, 6.3 Conservation of Forest and Wildlife: Wildlife Sanctuary and Biosphere Reserve, 7.03 Conservation of Forest and Wildlife: Wildlife Sanctuary and Biosphere Reserve, 6.4 Conservation of Forest and Wildlife: National Park, 7.04 Conservation of Forest and Wildlife: National Park, 7.05 Recycling of Paper and Reforestation, Chapter 7 Conservation of Plants and Animals - Test, 11.2 Variety in Cell Number, Shape and Size, 8.02 Variety in Cell Number, Shape and Size, 10.01 Structure, Function and Parts of Cell: Basic Components, 8.03 Structure, Function and Parts of Cell: Basic Components, 10.02 Structure, Function and Parts of Cell: Other Components and Comparison of Plant and Animal cells, 8.04 Structure, Function and Parts of Cell: Other Components and Comparison of Plant and Animal cells, Chapter 8 Cell - Structure and Functions - Test, 12.2 Sexual Reproduction: Reproductive System, 9.02 Sexual Reproduction: Reproductive System, 13.1 Adolescence, Puberty and Reproductive Phase of Life, 10.01 Adolescence, Puberty and Reproductive Phase of Life, Chapter 10 Reaching The Age Of Adolescence - Test, 3.05 Pressure exerted by Gases and Atmospheric Pressure, 11.07 Pressure exerted by Gases and Atmospheric Pressure, 8.3 Increasing and Decreasing the Friction, 12.03 Increasing And Decreasing The Friction, 9.4 Amplitude, Time Period And Frequency of Vibration, 13.04 Amplitude, Time Period And Frequency of Vibration, 14.02 Chemical Effect of Electric Current, Chapter 14 Chemical Effects of Electric Current - Test, 15.1 Electric Charge: Nature, Types and Transfer, 15.01 Electric Charge: Nature, Types and Transfer, 16.3 Multiple Images, Kaleidoscope and Dispersion, 16.03 Multiple Images, Kaleidoscope and Dispersion. Bakelite:It is a very hard and tough plastic.It is a poor conductor of heat and electricity. These solutions for Synthetic Fibres And Plastics are extremely popular among Class 8 students for Science Synthetic Fibres And Plastics Solutions come handy for quickly completing your homework and preparing for exams. 7. The lesson covers the complete explanation of class 8 Chapter 4 Metals and Non Metals.Topics covered are Introduction to metals, physical and chemical properties of metals. They are cheap compared to metals. Synthetic Fibres and Plastics. The plastics, have low specific gravity, the average being 1.3 to 1.40. NCERT Book for Class 8 Science Chapter 3 Synthetic Fibers and Plastics is available for reading or download on this page. 16.06 Can a Visually Challenged Persons Read and Write? Polythene:It is a plastic obtained by the polymerisation of a chemical compound known as ethene.It is tough and durable.It is used in making polythene bags,waterproof plastic sheets, bottles,buckets,dustbins. Synthetic Fibres and Plastics Class 8 Science Chapter 3 as per NCERT Book used in CBSE and other Schools. Synthetic fibres … She has started this educational website with the mindset of spreading Free Education to everyone. The NCERT Solutions for Class 8 science chapter 3 contains all the information about NCERT Solutions for Class 8 Science Chapter 3 Synthetic Fibres and plastics. Prepared by :- MOHAMMAD SIDDIQ SALIM III SEM - II YR B-arch POORNIMA UNIVERSITY, jaipur 2. The challenge can be used flexibly as part of the formal science and design and technology curriculum in the UK, […] Polymer: The term polymer id derived from two greek words POLY meaning many and MER meaning units.Therefore polymer refers to combination of repeating units. The plastics industry is a significant contributor to the global economy. Metals and Non Metals Class 8 Science Chapter 4 as per NCERT Book used in CBSE and other Schools. 16. Melamine is a plastic which can tolerate heat better than other plastics and resist fire. 4. Being lighter as compared to metals, plastics are used in cars, aircrafts and spacecrafts, too. 10.Name the plastic, which deformed easily on heating and can be bent easily. Filed Under: Class 8, Synthetic fibres and Plastics Tagged With: bakelite, melamine, plastics, polythene, polyvinyl chloride, teflon. Synthetic Fibres and Plastics Class 8 Science Chapter 3 - Synthetic Fibres and their Properties. 8.Plastics arrangement is _____ (a)Linear (b)Cross linked (c)Linear as well as cross linked (d)None of these. Also, you may want to use our Plastic Material Selection Guide or Interactive Thermoplastics Triangle to assist with the material selection process based on your application requirements. Synthetic fibres are cheaper than natural fibre. Synthetic Fibres and Plastics - Chapter Wise CBSE Solved Question and Answer Based On NCERT. Name some artificial fibres. Thermoplastic: Plastics that can be deformed easily upon heating and can be bent easily.Linear polymers and a combination of … Plastics are an affordable material. Name a natural fibre. There is no maintenance cost for plastic articles i.e., they do not need painting and polishing. Use our interactive properties table below to explore by property group, sort, or compare two or more plastic materials. Plastic uses in various fields. ... NCERT Solutions for Class 8 Science Chapter 3 – 5 Mark Questions and Answers. Polyvinyl chloride:It is a strong and hard plastic.It is not as flexible as polythene.It is used for making insulation for electric wires,pipes,garden hoses,raincoats,seat cover etc. They can be made transperent or color. Oil and Water do not stick on a plastic called Teflon,So Teflon coating is used in utensils FireProof Melamine Plastics do not catch fire easily So they are used to make uniform of fireman which makes them flame resistant Disadvantages of Using Plastics Plastics are Non Biodegradable They do not get easily decomposed by natural processes Video what are the properties of plastic ? They are poor conductors of heat and electricity. 10. Materials are most of all the objects and therefore materials have its own properties. Pupils investigate the properties of plastics then find solutions to problems caused by plastic waste globally An exciting challenge for pupils aged 8-14 years to develop solutions to the problems caused by plastic waste globally. Students who are in Class 8 or preparing for any exam which is based on Class 8 Science can refer NCERT Science Book for their preparation. (a)Thermoplastics (b)Thermosetting Plastics are also polymers.They consist of very long molecules made by joining many small molecules together. Question 9 Write 2 characteristics of melamine? Question 10 Write 1 characteristics of teflon? Teflon is a special plastic on which oil and water does not stick because it has slippery surface.It can withstand high temperature. They are light weight, smooth and soft than any other fibre. This strong and transparent plastic is a popular choice for light fixtures, beverage dispensers, and dishes. Required fields are marked *. Plastics come from polymers, hence all plastics are polymers, but not all polymers are plastic. 8. Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. TYPES OF PLASTIC. 16.6 Can a Visually Challenged Persons Read and Write? It is non-reactive; Plastic is a poor conductor. A plastic is a synthetic material which can be moulded or set into desired shape when soft and then hardened to produce a durable article. When you want to apply any type of load on a particular member, you need to know its material properties, density, etc. It is used for making the handles of various cooking utensils(fry pans,pressure cooker) because, 2)It does not become soft on getting heated, It is used for making electric switches,plugs and sockets because. 9. Chemical Properties of Plastic. To understand the properties of material explore the article! Answer: Cotton Question 2. Answer: Nylon, terylene, PET, acrylic, teflon, etc. Which of the following properties of plastic makes it most convenient for use? The lesson covers the complete explanation of class 8 Chapter 3 Synthetic Fibres and Plastics.Topics covered are Introduction to fibres, kinds of fibres. Apply coupon WELCOME21 at checkout and avail 21% discount on your order. All operations like drilling ,sawing, punching can be done on plastics. The plastics that act as insulators mostly have a high dielectric strength. Synthetic Fibres and Plastics class 8 Notes Science in PDF are available for free download in myCBSEguide mobile app. Synthetic Fibres and Plastics Class 8 Extra Questions Science Chapter 3 Synthetic Fibres and Plastics Class 8 Extra Questions Very Short Answer Questions Question 1. For that, in this article, I am exploring the necessary properties of polymers in a detailed manner. 9. Plastics are also polymers.They consist of very long molecules made by joining many small molecules together. In general different properties of materials are enlisted below. Properties of Plastics or Polymers: Properties of plastics or polymers play a vital role in the field of Mechanical Engineering. A plastic called Teflon is used in making Nonstick coat on the cookware. Plastics generally possess sufficient durability, provided they offer sufficient surface … Characteristic properties of plastics: 1. Question 2 Give few examples of plastics? [8] DUCTILITY. Cotton is a natural polymer known as cellulose which is composed of large number of glucose units. 5. The main physical difference between the two is that one can be reused time and again, and the other cannot. Special plastic cookware made of melamine is used in microwave ovens for cooking food. Living Science Solutions for Class 8 Science Chapter 3 Synthetic Fibres And Plastics are provided here with simple step-by-step explanations. Question 8 Write 2 characteristics of bakelite? Offer ending soon! 1. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. 2. MCQ quiz on Plastics multiple choice questions and answers on Plastics MCQ questions quiz on Plastics objectives questions with answer test pdf. Plastic is a synthetic material made from a wide range of organic polymers such as polyethylene, PVC, nylon, etc., that can be moulded into shape while soft, and then set into a rigid or slightly elastic form. Acrylic plastic is a polymer material that contains acrylic acid. […] The plastics are not ductile and hence they fail without giving warning. NCERT Solutions Class 8 Science; Plastics. [9] FIXING. It is used for making soles of electric irons,giving non-stick coating on cookwares. Hurry! Depending on physical properties, plastics are divided into two types: Thermoplastic and thermosetting. See other topics from Chapter 3 Synthetic Fibres and Plastics, Biodegradable and Non-biodegradable material, Steps to save environment from plastic waste, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 5 – उत्साह और अट नहीं रही है, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 4 – आत्मकथ्य, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 3 – सवैया, कवित्त – देव, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 2 – राम लक्ष्मण परशुराम संवाद, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 1 – पद. Answer: Protein Question 3. The plastics posses excellent electric insulating properties. A) It is non-reactive. 6. *Question 2* List three steps you can take to reduce the danger that plastic pose to the environment? *Class:- 8 *Sub:- Science *Question 1* List and explain four properties of plastics? explains properties like plastic is nonreactive, plastic is light strong & durable, etc for CBSE Class 8 Science. Types of Plastics. 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