Viva ICSE Chemistry 7

Contents:

Chapter 1. Matter and Its Composition • MATTER—Properties of Matter • PARTICLE THEORY OF MATTER—Arrangement of Particles in Solids, Arrangement of Particles in Liquids, Arrangement of Particles in Gases • STATES OF MATTER—Solids, Liquids, Gases • COMPOSITION OF MATTER—Elements, Compounds • DIFFERENCES BETWEEN THE THREE STATES OF MATTER

Chapter 2. Physical and Chemical Changes • TYPES OF CHANGES—Desirable Changes and Undesirable Changes, Reversible Changes and Irreversible Changes, Exothermic Changes and Endothermic Changes • PHYSICAL CHANGES—Characteristics of a Physical Change, Identifying Physical Changes • CHEMICAL CHANGES—Characteristics of a Chemical Change, How to Know that a Chemical Change has Occurred•, Importance of Chemical Changes, Identifying Chemical Changes • CHANGES INVOLVING CHANGE IN STATE OF MATTER • CHANGES INVOLVING CHANGE IN ENERGY

Chapter 3. Elements, Compounds and Mixtures (Experimental Techniques) • ELEMENTS—Metals, Non-metals, Metalloids, Noble Gases • NAMES AND SYMBOLS OF ELEMENTS • COMPOUNDS—Characteristics of a Compound • ATOMS • MOLECULES • ATOMICITY—Monoatomic Molecules, Diatomic Molecules, Triatomic Molecules, Polyatomic Molecules • MOLECULAR FORMULA—Significance of Formula • MIXTURES—Characteristics of a Mixture, Types of Mixtures, Formation of Mixtures • DIFFERENCES BETWEEN COMPOUNDS AND MIXTURES • METHODS OF SEPARATING MIXTURES—Need for Separation of Mixtures, Solid-Solid Mixtures, Solid-Liquid Mixtures, Liquid-Liquid Mixtures, Gas-Liquid Mixtures • COMBINING METHODS OF SEPARATION—Separating Mixture of Salt, Sand and Grain; Separating Mixture of Iron Filings, Sand and Iodine • CHROMATOGRAPHY—Paper Chromatography

Chapter 4. Atomic Structure • ATOMS AND MOLECULES—Atoms, Molecules • WHAT HAPPENS WHEN TWO ATOMS COMBINE • ATOMICITY • VALENCY • IONS • RADICALS • DIFFERENCES BETWEEN ATOMS, MOLECULES AND RADICALS • PERIODIC TABLE • WRITING THE CHEMICAL FORMULA OF A COMPOUND—Rules for Writing the Chemical Formula, Significance of Chemical Formula

Chapter 5. Language of Chemistry • CHEMICAL REACTIONS • TYPES OF CHEMICAL REACTIONS—Combination Reactions, Decomposition Reactions • CONDITIONS NECESSARY FOR CHEMICAL REACTION TO OCCUR • CHARACTERISTICS OF CHEMICAL REACTIONS • CHEMICAL EQUATIONS—Steps to Write a Chemical Equation

Chapter 6. Metals and Non-Metals • METALS—Occurrence of Metals, Properties of Metals, Noble Metals, Corrosion in Metals, Rusting of Iron, Uses of Metals • NON-METALS—Sources of Non-metals, Properties of Non-metals, Uses of Non-metals • COMPARISON BETWEEN METALS AND NON-METALS • METALLOIDS—Properties of Metalloids, Metalloids and their Uses

Chapter 7. Air and Atmosphere • ATMOSPHERE • NATURE AND COMPOSITION OF AIR • AIR IS A MIXTURE AND NOT A COMPOUND • VARIOUS COMPONENTS OF AIR—Oxygen, Nitrogen, Carbon Dioxide, Water Vapour, Inert Gases • AIR QUALITY—Methods of Reducing Air Pollution

At a Glance

Ask and Learn

Attempt and Score

Logical Thinking

About the Authors:

Prof. Suresh Garg has been associated with School of Sciences in lndira Gandhi National Open University, New Delhi since 1993. He served as Commonwealth Expert on Distance Science Teaching at the University of the South Pacific, Fiji Islands from 1996 to 1998. During 1999-2002, he was appointed as Director, School of Sciences of the University and in 2002-2006, he served as Pro-Vice Chancellor and Acting Vice Chancellor of IGNOU. In the period 2008-2010, as Commonwealth expert, he worked as Founder Director, Centre for Learning and Teaching, National University of Lesotho, Lesotho, Southern Africa.

He has been a member of several national and international professional bodies like lndian Association of Physics Teachers, CASTME-Asia, and ICTP-India. Having served on academic, research and management boards of several conventional and open universities in the country and abroad, he carries vast experience in educational planning, management and pedagogy. His books in Physics are widely prescribed by several universities in India. He has also published two books on different aspects of lndian higher education. He has also co-edited five books in different areas of distance education, besides publishing more than 75 research papers in national and international journals of repute, 20 chapters in books and a large number of popular articles. During the period 2003-2006, he was Chief Editor of lndian Journal of Open Learning published by IGNOU. Between 2004 and 2006, he was Editor of Global E-Journal of Open, Flexible & Distance Education. He has been on the Editorial Boards of AAOU Journal on open learning, Staff and Educational Development International, lnternational Journal of Scientific, Engineering and Educational Research published online and Open Praxis published by International Council for Distance Education.

Neha Sharma is a gold medalist in M.Tech. from Guru Gobind Singh lndraprastha University. She did her M.Sc. from the University of Delhi and has worked as an Assistant Professor in Galgotias College of Engineering and Technology, Greater Noida for more than seven years. Presently she is working as a PGT faculty in Venkateshwar Global School, Rohini.