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SAI International School

                                                     Class – VIII
                                               Subject – Chemistry

                               Topic – SYNTHETIC FIBRES AND PLASTICS

                                               CONCEPT MAPPING


        Instructions:
              Go through the concept mapping given.
              Solve the various conceptual questions given, based on the various concepts of the
               Chapter.

                                 Concept Mapping (Synthetic Fibres and Plastics)

                                                                     Natural & Synthetic Fibre
                                                                     Monomer, Polymer and
            a) Synthetic Fibres
                                                                      Polymerisation
                                                                     Blended Fibres
                                                                     Rayon; Its properties & uses
                                                                     Nylon; Its  properties & uses
            b) Types of Synthetic Fibres
                                                                     Polyester; Its  properties & uses
                                                                     Acrylic; Its  properties & uses
                                                                     Characteristic Properties
            c) Characteristics of Synthetic Fibre
                                                                     Disadvantages of synthetic fibres
                                                                     Types of Plastics
                                                                     Thermoplastics – PVC, PET,
            d) Plastics                                               Polyester
                                                                     Thermosetting Plastics – Bakelite,
                                                                      Melamine & Teflon
                                                                     Use of plastics depending on their
            e) Useful properties of plastics
                                                                      properties
                                                                     Biodegradable and Non-
                                                                      biodegradable materials
            f) Plastic and the Environment
                                                                     Harmful effects of plastics and its
                                                                      precautionary measures

                                                     Assessment
                                             Concept – Synthetic Fibres

           Q1.  Define the term ‘spinnerets’.                                                            1


           Q2     Give 4 common examples of synthetic fibres.                                            1

           Q3     Why synthetic fibres are often mixed with natural fibres?                              1

           Q4     Give two examples of ‘Blended Fibres’ and mention what are they made up of.            1


           Q5     Write two properties of synthetic fibres.                                              1




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