Download Class 7 Science Fibre to Fabric Notes in PDF format. All Revision notes for Class 7 Science have been designed as per the latest syllabus and updated chapters given in your textbook for Science in Class 7. Our teachers have designed these concept notes for the benefit of Class 7 students. You should use these chapter wise notes for revision on daily basis. These study notes can also be used for learning each chapter and its important and difficult topics or revision just before your exams to help you get better scores in upcoming examinations, You can also use Printable notes for Class 7 Science for faster revision of difficult topics and get higher rank. After reading these notes also refer to MCQ questions for Class 7 Science given on studiestoday
Revision Notes for Class 7 Science Chapter 3 Fibre to Fabric
Class 7 Science students should refer to the following concepts and notes for Chapter 3 Fibre to Fabric in Class 7. These exam notes for Class 7 Science will be very useful for upcoming class tests and examinations and help you to score good marks
Chapter 3 Fibre to Fabric Notes Class 7 Science
Polymers
Polymers are high molecular mass substances consisting of large number of repeating structural units derived from simple molecules called as monomers.
Monomers: The simple molecules which combine to give polymers are called monomers. The process by which the simple molecules (i.e. monomers) are converted into polymers is called polymerisation.
Homopolymer: A polymer formed from one type of monomers is called homopolymer. For example.
Classification of Polymers on the Basis of Molecular Forces
A large number of applications of polymers depend upon their mechanical properties such as tensile strength, elasticity, toughness, etc.
Depending upon the intermolecular forces, the polymers have been classified into four types:
1. Elastomers 2. Fibres
3. Thermoplastics 4. Thermosetting polymers
1. Elastomers: The polymers that have elastic character like rubber are called elastomer E.g. buna-S, buna-N etc.
2. Fibres: These are the polymers which have strong intermolecular forces between the chains. The common examples are nylon-66, terylene, silk etc.
3. Thermoplastics: These are the polymers which can be easily softened repeatedly when heated and hardened and cooled with little change in their properties. Common example of thermoplastics are polythene, polystyrene, polyvinyl chloride, teflon, etc.
4. Thermosetting polymers: These are the polymers which undergo permanent change on heating. The common examples are bakelite, melamine, formaldehyde etc.
Natural and Synthetic Rubbers
Natural Rubber: Rubber is a naturally occurring polymer. It is obtained as latex from rubber trees. Rubber latex is a colloidal suspension of rubber in water. Rubber trees are found in tropical and semi-tropical countries such as India (southern part), Malaysia, Indonesia, Ceylon, South America, etc. It is highly elastic. It can be Elastically deformed but regains its original shape after the stress is relieved. This elasticity makes it a valuable for variety of uses.
Natural rubber is a polymer of isoprene (2-methyl buta-1, 3-diene)
Vulcanization of Rubber
The process of heating natural rubber with sulphur to improve its properties is called vulcanization.
Class 7 Science Nutrition in Plants Notes |
Class 7 Science Nutrition in Animals Notes |
Class 7 Science Fibre to Fabric Notes |
Class 7 Science Heat Notes |
CBSE Class 7 Science Acids Bases and Salts Notes |
CBSE Class 7 Science Physical And Chemical Changes Notes |
Class 7 Science Weather Climate Adaptations of Animals to Climate Notes |
Class 7 Science Winds Storms and Cyclones Notes |
Class 7 Science Soil Notes |
Class 7 Science Respiration in Plants and Animals Notes |
Class 7 Science Transportation in Animals and Plants Notes |
Class 7 Science Reproduction in Plants Notes |
Class 7 Science Motion and Time Notes |
Class 7 Science Electric Current and its Circuits Notes |
Class 7 Science Light Notes |
Class 7 Science Forests Our Lifeline Notes |
Class 7 Science Waste Water Story Notes |
CBSE Class 7 Science Chapter 3 Fibre to Fabric Notes
We hope you liked the above notes for topic Chapter 3 Fibre to Fabric which has been designed as per the latest syllabus for Class 7 Science released by CBSE. Students of Class 7 should download and practice the above notes for Class 7 Science regularly. All revision notes have been designed for Science by referring to the most important topics which the students should learn to get better marks in examinations. Our team of expert teachers have referred to the NCERT book for Class 7 Science to design the Science Class 7 notes. After reading the notes which have been developed as per the latest books also refer to the NCERT solutions for Class 7 Science provided by our teachers. We have also provided a lot of MCQ questions for Class 7 Science in the notes so that you can learn the concepts and also solve questions relating to the topics. We have also provided a lot of Worksheets for Class 7 Science which you can use to further make yourself stronger in Science.
You can download notes for Class 7 Science Chapter 3 Fibre to Fabric for latest academic session from StudiesToday.com
Yes, the notes issued for Class 7 Science Chapter 3 Fibre to Fabric have been made available here for latest CBSE session
There is no charge for the notes for CBSE Class 7 Science Chapter 3 Fibre to Fabric, you can download everything free of charge
www.studiestoday.com is the best website from which you can download latest notes for Chapter 3 Fibre to Fabric Science Class 7
Come to StudiesToday.com to get best quality topic wise notes for Class 7 Science Chapter 3 Fibre to Fabric