S. Chand Science for Class 10 P2 Chemistry. S. Chand Science for Class 10 free | P2 Chemistry S. Chand Science for 10th Class | Part 2 Chemistry [Read Online free] S. Chand Reference Book For Science Class 10. Review and free Download all three parts Physics, Chemistry and Biology Read Online.
S. Chand Class 10 | Chemistry: Ch5 Periodic Classification of Elements
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| S. Chand Class 10 | Chemistry: Ch5 Periodic Classification of Elements |
Summery
Chemical Reactions Involve Chemical Changes ; Formation of New Substances by the Rearrangement of Atoms ; Reactants and Products ; Characteristics of Chemical Reactions : Evolution of a Gas, Formation of a Precipitate, Change in Colour, Change in Temperature and Change in State ; Chemical Equations : Short-Hand Method of Representing a Chemical Reaction ; Balanced Chemical Equations and Unbalanced Chemical Equations ; Balancing of Chemical Equations to Satisfy the Law of Conservation of Mass in Chemical Reactions ; To Make Chemical Equations More Informative : By Indicating the Physical States of Reactants and Products in the Equation (Solid, Liquid, Aqueous Solution and Gas), By Indicating the Heat Changes in the Equation (Exothermic Reactions and Endothermic Reactions), and by Indicating the Conditions Under Which the Reaction Takes Place (Heat, Catalyst, Pressure and Temperature) ; Important Examples on Writing of Balanced Chemical Equations ; Types of Chemical Reactions : Combination Reactions, Decomposition Reactions, Displacement Reactions, Double Displacement Reactions, and Oxidation and Reduction Reactions ; Oxidising Agents and Reducing Agents ; Uses of Decomposition Reactions ; Decomposition Reactions in Our Body ; Effects of Oxidation Reactions in Everyday Life ; Corrosion of Metals and Rancidity of Food ; Prevention of Rancidity of Food : Adding Anti-Oxidants, Packaging in Nitrogen Gas, Keeping in a Refrigerator, Storing in Air-Tight Containers, and Away From Light.
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About the Authors
Lakhmir Singh has extensive experience of teaching science subjects and has written many books on the three main branches of science physics (Honours) from the Hindu collage and later obtained on M.Sc from Delhi University. Lakhmir Singh began his teaching career as a lecturer in Dyal Singh collage of university of Delhi. Later, he became a reader at that college.
He did his M.Sc. from Delhi University in 1969. Since then he has been teaching in Dyal Singh College of Delhi University, Delhi. He started writing books in 1980. Lakhmir Singh believes that book writing is just like classroom teaching. Though a book can never replace a teacher but it should make the student feel the presence of a teacher. Keeping this in view, he writes books in such a style that students never get bored reading his books. Lakhmir Singh has written more than 15 books so far on all the science subjects: Physics, Chemistry and Biology. He believes in writing quality books. He does not believe in quantity.
Manjit Kaur has been a school teacher for several years and she has co-authored many science books. She graduated with a B.Sc from Miranda House, Delhi University and later obtained a B.Ed from Delhi University. This book is published by S. Chand & Company New Delhi.
She did her B.Sc., B.Ed. from Delhi University in 1970. Since then she has been teaching in a reputed school of Directorate of Education, Delhi. Manjit Kaur is such a popular science teacher that all the students want to join those classes which she teaches in the school. She has a vast experience of teaching science to school children, and she knows the problems faced by the children in the study of science. Manjit Kaur has put all her teaching experience into the writing of science books. She has coauthored more than 15 books alongwith her husband, Lakhmir Singh.