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CHIEF PATRON : SHRI AVINASH DIKSHIT COMMISSIONER, Kendriya Vidyalaya Sangathan(HQ) New Delhi SHRI PRL GUPTA, ASSISTANT COMMISSIONER, Kendriya Vidyalaya Sangathan Mumbai Region SHRI SK VERMA EDUCATION OFFICER, Kendriya Vidyalaya Sangathan Mumbai Region SMT. AP BHALLA EDUCATION OFFICER, Kendriya Vidyalaya Sangathan Mumbai Region SMT. D. SUDHAMANI EDUCATION OFFICER, Kendriya Vidyalaya Sangathan Mumbai Region CO-ORDINATORS SMT. GEETHA B. PRINCIPAL, Kendriya Vidyalaya No.3 Colaba, Mumbai SMT. SAVITHRI T. PRINCIPAL, Kendriya Vidyalaya CME Pune
SUPPORT MATERIAL CLASS – X FIRST TERM 2011 – 2012
Kendriya Vidyalayas are the pioneer institutions in the field of Education focusing all round development of the students. Keeping in view of the implementation of CCE it is desired to prepare study/support material for Class X to guide the students in the right direction and to equip the students to face the challenges with ease.
For the academic year 2011-12 the task has been allotted to Kendriya Vidyalaya Sangathan, Mumbai Region for preparation of
study/support material in Class X-Science.
Kendriya Vidyalaya Sangathan, Mumbai Region records appreciation for the sincere efforts of Mrs. Geetha B., Principal, KV-No.3 Colaba, Mumbai and Mrs. Savitri T., Principal, KV-CME Pune and the team of dedicated and committed teachers – Mrs. T. Virdi & Mrs. A. Ponkshe, KV-CME Pune, Mrs. Swathi Kulkarni & Mr. AK Rai, KVNo.3 Colaba for preparing the study material.
I am confident that the support/study material will definitely help the students to understand the concepts well and meet quality expectations.
(PRL GUPTA) ASSISTANT COMMISSIONER KVS, RO, MUMBAI
INDEX PART – I
Gist of the Lesson o Key Concepts o Important Definitions o Chemical Equations o Important Differences o Flow Charts Information of o Important Diagrams o Important Activities HOTS Questions o Solved o Unsolved Formative Assessment I (FA1) o Two Question Papers for each Chapter Summative Assessment (SA1) o Two Sample Question Paper Sets 5
PART – II Diagnostic Tools for Formative Assessment Oral Questions Quiz Work Sheets Crosswords Puzzles Topics for – o Seminar o Debate Suggested Websites for – o Content enrichment 6
o Activities (Worksheets, Puzzles, etc.)
SUPPORT MATERIAL FOR CLASS X FIRST TERM
UNIT 1 : Chemical Substances 1. Chapter 1. Chemical Reactions and Equations 2. Chapter 2. Acids, Bases and Salts 3. Chapter 3. Metals and Non-Metals
UNIT 2 : World of Living 1. Chapter 6. Life Processes 2. Chapter 7. Control and Coordination
UNIT 3 : Effects of Current 1. Chapter 12. Electricity 2. Chapter 13. Magnetic Effects of Electric Current
UNIT 4 : Natural Resources
1. Chapter 14. Sources of Energy
CHAPTER-1 CHEMICAL REACTIONS AND EQUATIONS GISTS OF THE LESSON 1 Chemical reaction— Chemical changes or chemical reactions are the changes in which one or more new substances are formed. 2 Chemical Equations – Representation of a chemical reaction in terms of symbols and formulae of the reactants and products is known as chemical equation. 3 Balanced Chemical equations – The chemical equation in which the no. of atoms of different elements is same on both sides of the arrow is called balanced chemical equation. 4 The chemical reactions can be classified into different types such as— a) Combination reaction – The reactions in which two or more substances combine to form a new substance are called combination reaction. For example, 2Mg(s) + O2 (g) 2 MgO (s) b) Decomposition reaction - The reaction in which a single compound breaks up into two or more simpler substances are called decomposition reactions. For example, 2Pb (NO3)2 (s) 2PbO (s) + 4NO2 (g) +O2 (g)...