Chemistry 9th English Medium Smart Syllabus Guess 2021

 

Chemistry Class 9th

Smart Syllabus Guess Papers

Written & Compiled By Prof. Nasir Arfat Nasir

 

CHAPTER 1 : FUNDAMENTALS OF CHEMISTRY

Smart Syllabus

 

Chemistry and branches of chemistry, Basic Definitions (matter, substance,

homogeneous and heterogeneous mixture, physical and chemical properties),

Elements, Compound and Mixture, Difference between a compound and a mixture,

Atomic Number and Mass Number, Example 1.1, Relative Atomic Mass and

Relative Mass Unit, Empirical formula and Molecular formula, Molecular mass and

Formula mass, Example 1.2; 1.3, Types of Molecules, Avogadro’s Number, Mole

and Molar mass, Example 1.4, Chemical Calculations, Mole-Mass Calculations,

Example 1.5, Mole-Particle Calculations, Example 1.6,1.7(pp. 4-14; 16-22).

Classwork: Multiple Choice Questions (1, 2, 6, 7, 8-13) (pp.24-25)

Homework: Short Answer Questions (1-8, 10, 11, 12, 14-17, 19) (pp.25-26);

Long Answer Questions (1, 2, 4) (p.26); Numericals (1, 3, 4, 6, 7, 9) (p.26)

 

Most Important Short Questions

 

1.            Define Chemistry And All Branches Of Chemistry 2       

2.            Differentiate between Physical Properties and Chemical Properties 4

3.            Define Elements 5

4.            What is meant by Symbols. 6

5.            Differentiate between Valence and Radical 6

6.            Define Compound and Mixture 8

7.            Differentiate between Homogeneous Mixture and Heterogeneous Mixture 8

8.            What is meant by Atomic Number and Mass Number 10

9.            What do you mean by Relative Atomic Mass 11

10.        Define Atomic Mass Unit 11

11.        Differentiate between Empirical Formula and Molecular Formula 13

12.        Molecular Mass And Formula Mass 13

13.        Differentiate Between Homoatomic Molecules And Heteroatomic Molecules 16

14.        What is Avogadro’s Number And Mole 18

Exercise : Most Important Questions (1, 3, 4, 6, 9) Page Number 25

 

Most Important Long Questions

 

1.            Define elements explain its different types.5  (Most Imp)

2.            Define compound explain its different types.7  

3.            Differentiate between compound and mixture. 9  (Most Imp)

4.             Define molecule? Discuss its different types. 16  (Most Imp)

 

 

CHAPTER 2 : STRUCTURE OF ATOMS

Smart Syllabus

 

Rutherford’s Atomic Model, Defects in Rutherford’s Model, Bohr’s Atomic Theory,

Electronic Configuration, Examples: 2.1, 2.2, 2.3, Electronic Configuration of First

18 Elements (pp. 31-37), definition of isotopes types and uses of isotopes.

Classwork: Multiple Choice Questions (3-9) (p.42)

Homework: Short Answer Questions (3-13) (pp. 42-43);

Long Answer Questions : (4-10) (p.43)

 

Most Important Short Questions

 

1.         Give the observations made by Rutherford experiment.31

2.         Give the defects in Rutherford atomic model.32

3.         Differentiate between shells and subshells.35

4.         Define electronic configuration.35

5.         Write the electronic configuration of an element having 11 electrons.36

6.         Write down the electronic configuration of chloride ion (Cl- ) .36

7.         Define isotopes.38

8.         Name the isotopes of Hydrogen.38

9.         What is meant by radioactive isotope dating and carbon dating.40

Exercise : Most Important Questions (5, 6, 9, 11, 12) Page Number 42

 

Most Important Long Questions

 

1.         Give the results of Rutherfords experiment.31 (Most Imp)

2.         Discuss the postulates of the Bohar atomic model video.33 (Most Imp)

3.         Differentiate between rutherford's atomic theory and Bohr's atomic theory.34

4.         Define isotopes? Explain it with examples.38 (Most Imp)

5.          Explain the uses of isotopes in medicines and radiotherapy.40 (Most Imp)

 

CHAPTER 3 : PERIODIC TABLE AND ITS PERIODICITY

Smart Syllabus

 

Definition of Periodic Law, Modern Periodic Table, Periods and Groups, Periodicity

of Properties (definition and trends in periods and groups in Atomic Size and Atomic

Radius, Shielding Effect, Ionization Energy, Electron Affinity, and Electronegativity.

Classwork: Multiple Choice Questions (1, 2, 6, 7, 10) (pp.56-57)

Homework: Short Answer Questions (3, 4, 7-9) (p.57);

Long Answer Questions : (8-10) (p.57)

           

Most Important Short Questions

 

1.      Define periodic law. 46

2.      Differentiate between periods and Groups.47

3.      Define transition metals.48

4.      What is atomic radius.51

5.      Differentiate Between effective nuclear charge and shielding effect.52

6.      Define ionization energy.53

7.      Define electron affinity.53

8.      What is the electronegativity.54

Exercise : Most Important Questions (4, 7, 8, 9) Page Number 57

 

Most Important Long Questions

 

1.                  Explain the salient features of long form of periodic table.47 (Most Imp)

2.                  Write a note on periods.49 (Very Imp)

3.                  Write a note on groups.50 (Very Imp)

4.                  What is atomic radius? Give its trend in periods and Groups.51

5.                  Define ionization energy? Give its Trend in periods and Groups. 53 (Most Imp)

6.                  What is electron affinity? Give its trend in periods and Groups.53 (Most Imp)

7.                  Define electronegativity? Give its trend in periods and Groups. 54 (Most Imp)

 

CHAPTER 4 : STRUCTURE OF MOLECULES

 

Smart Syllabus

 

Chemical Bonds, Types of Chemical Bond, Ionic Bond, Covalent Bond and its

types, Dative or Coordinate Covalent Bond, Polar and Non-Polar Covalent Bond,

Metallic Bond, Intermolecular Forces (Dipole-Dipole Interaction, Hydrogen

Bonding) (Page 59-68).

Classwork: Multiple Choice Questions (5-8, 11-13, 17) (p.72-73)

Homework: Short Answer Questions (4, 5, 7, 8, 10-14) (pp.73-74); Long Answer Questions (1, 4-8) (p.74)

 

Most Important Short Questions

 

1.             What is chemical bond.59

2.             Define bonding electrons.60

3.             Define ionic bond.60

4.             What is covalent bond.61

5.             Define single , double and triple covalent bond. 62

6.             Define co-ordinate covalent bond.63

7.             Differentiate between Donor and acceptor.63

8.             Define lone pair.63

9.             What is meant by non polar covalent bond and polar covalent bond. 64

10.         Define metallic Bond.65

11.         Define intermolecular forces.66

12.         What is hydrogen bonding.67

13.         Why ice floats over Water.68

14.         Differentiate between malleability and ductility.70

Exercise : Most Important Questions (5, 7, 8, 10, 11, 12, 13, 14) Page Number 74

 

Most Important Long Questions

 

1.         What is ionic bond? Explain it with an example.60 (Most Imp)

2.         Define covalent bond? Explain its different types.61 (Most Imp)

3.         Explain Co-ordinate covalent bond.63 (Most Imp)

4.         Explain hydrogen bonding. (Very Imp)

CHAPTER 5 : PHYSICAL STATE OF MATTER

 

Smart Syllabus

 

Boyle’s Law, Experimental Verification of Boyle’s Law, Charles’s Law,

Experimental Verification of Charles’s Law, Evaporation, Vapour Pressure, Boiling

Point, Freezing and Melting Point, Density (pp. 78-83, 84-90). Definition gas, liquid, solid and allotropy

Classwork: Multiple Choice Questions (2, 7, 9-11) (p.93)

Homework: Short Answer Questions (3, 4,5, 7) (p.94); Long Answer Questions (1-4) (p.94); Numericals (2-5, 7-9) (pp. 94-95;

 

Most Important Short Questions

 

1.               Define Boyle's law.78

2.               Define absolute zero and absolute temperature scale .81

3.               Define Charles law.81

4.               What is Charles law.81

5.               Differentiate between evaporation and condensation.84

6.               Why evaporation is a cooling effect.85

7.               Define vapour pressure.85

8.               Differentiate between boiling point and freezing point.88

9.               What is melting point.89

10.           Differentiate between crystalline solids and amorphous solids.90

11.           Define allotropy.90

12.           Upon which reasons elements show allotropy.90

13.What is meant by transition temperature.90

Exercise : Most Important Questions (3, 4, 5, 7) Page Number 94

 

Most Important Long Questions

 

1.               Write a note on Boyle's law.78 (Most Imp)

2.               Write a note on Charles law. 81 (Most Imp)

3.               Define evaporation? Give its different factors. 85 (Most Imp)

4.               Define vapour pressure? Give its different factors.85 (Most Imp)

5.               What is boiling point ? Explain its different factors.87 (Very Imp)

 

CHAPTER 6 : SOLUTION

Smart Syllabus

 

Definitions of following terms with example: {Solution (i-solute ii-solvent),

Aqueous Solutions, Saturated Solution, Unsaturated Solution, Supersaturated

Solution, Dilution of Solution, Percentage (Mass/Mass Percentage, Mass/Volume

Percentage, volume/ mass percentage, Volume/Volume Percentage), Molarity with

formula, Preparation of Molar Solution, example 6.2 & 6-3, Dilution of Solution

Solubility (pp. 97-104).

Classwork: Multiple Choice Questions (4,8, 11-13) (pp.110-111)

Homework: Short Answer Questions (12) (p.111);  Long Answer Questions (1-4) (p.112).

Numericals (2,4-5,6) (p.112). .

 

Most Important Short Questions

 

1.            Define solution.97

2.            How to distinguish between a solution and a pure liquid.97

3.            What is meant by aqueous solutions.97

4.            Differentiate between solute and solvent.97

5.            Differentiate between saturated solution and unsaturated solution.98

6.            Define supersaturated solution.98

7.            Differentiate between dilute solution and concentrated solution .99

8.            Define concentration. 100

9.            How 1 molar solution is prepared.102

Exercise : Most Important Questions (12) Page Number 111

 

Most Important Long Questions

 

1.            Write a note on saturated and super saturated solution. 98

2.            What is percentage ? Explain its four different ways. 100 (Most Imp)

 

 

 

 

 

 

 

 

 

CHAPTER 7 : ELCTROCHEMISTRY

 

Smart Syllabus

 

Definitions of Oxidation and Reduction Reactions with examples, Oxidation and

Reduction in terms of Loss or Gain of Electrons, Oxidation State and Rules for

Assigning Oxidation State, Examples: 7.1, 7.2, 7.3, definition of Oxidizing and

Reducing Agents with examples, Oxidation-Reduction Reactions, definition of

Electrolytes (weak and strong electrolyte) non-electrolyte, Corrosion and its

Prevention, Rusting of Iron, Prevention of Corrosion, Prevention of Corrosion by

Physical Methods, definition and method Electroplating(electroplating of silver and

chromium) (pp. 114-124, 128-132).

Classwork: Multiple Choice Questions (1-5-6, 8-10) (p.135)

Homework: Short Answer Questions (8-13, 17-22) (p.136);

Long Answer Questions(1,2,4,7,9-10) (p.137)    

 

Most Important Short Questions

 

1.         Define redox reactions.115

2.         What is meant by Oxidation State Or oxidation number. 117

3.         Differentiate between oxidation and reduction.119

4.         Differentiate between reducing agent and oxidizing agent.119

5.         What is electrochemical cell.120

6.         Define electrolytes.120

7.         Get between strong electrolytes and weak electrolytes.121

8.         What is non electrolytes. 121

9.         Define electrolytic cells.121

10.     What is meant by electrolysis. 121

11.     What is meant by Galvanic or voltaic cell.123

12.     Differentiate between corrosion and rusting.128

13.     What is alloy.129

14.     What is meant by galvanizing.129

15.     Define electroplating.130

Exercise : Most Important Questions (11, 12, 13, 17, 18) Page Number 136

Most Important Long Questions

1.         Define Oxidation State or oxidation number? Give the rules for assigning oxidation number or Oxidation State.117 (Most Imp)

2.         Explain the electrolysis of water. 122 (Most Imp)

3.         Differentiate between electrolytic cell and Galvanic cell.125

4.         Prepare the sodium metal from fused NaCl. 125 (Most Imp)

5.         Prepare  NaOH from Brine.126 (Most Imp)

6.         Explain the rusting of iron.128 (Most Imp)

7.         Give the method to Prevention of corrosion.129 (Most Imp)

8.         Define electroplating? Explain it with example of silver electroplating .130 (Very Imp)

9.         Find out the oxidation numbers of the underlined elements in the following compounds. (Most Imp)

(a). Na2SO2    (b). AgNo3    (c). KMnO4   (d).K2Cr2O7   (e).HNO2

                                                                                

 

CHAPTER 8 : CHEMICAL REACTIVITY

 

Smart Syllabus

 

Definition types and properties of Metals, Electropositive Character and its trends in

periods and groups, Inertness of Noble Metals (silver, gold and platinum), definition and properties of Non-Metals, Comparison of Reactivity of the Halogens, Important

Reactions of Halogens (reaction with hydrogen, water, methane and NaOH) (pp. 138-141,

Classwork: Multiple Choice Questions (1-3, 7-11) (pp.150-151)

Homework: Short Answer Questions (3-12) (p.151);

Long Answer Question(2,3,5,7-9,11) (p.151)

 

Most Important Short Questions

 

1.         Define electropositivity or metallic character. 140

2.         Define transition metals or D group elements.144

3.         What is meant by Carats.145

Exercise : Most Important Questions (2, 3, 5, 7, 11) Page Number 151

 

Most Important Long Questions

 

1.         Explain the important Physical Properties of metals.139 (Very Imp)

2.         Define electropositive character ? Give its trend in periods and Groups140 (Most Imp)

3.         Give the reaction of sodium with   : H2O , O2 , Cl2 and H2.143 (Most Imp)

4.         Give the important physical properties of non-metals.147 (Very Imp)

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