Chapter 1: The Language of Chemistry
Shaalaa has a total of 165 questions with solutions for this chapter in Class 9 Chemistry. Concepts covered in The Language of Chemistry are Atomic Mass, Chemical Equation, Chemical equations, Concept for Language of Chemistry, Empirical Formula of a Compound, Molecular Mass, Naming Certain Compounds, Percentage Composition, Radicals, Symbol of an Element, Valency, Writing Chemical Formulae - Formulae of Simple Compounds
Chapter 2: Chemical Changes and Reactions
Shaalaa has a total of 94 questions with solutions for this chapter in Class 9 Chemistry. Concepts covered in Chemical Changes and Reactions are Burning - Definition and Conditions of Burning, Burning of Magnesium Or Candle to Show that Substances Gain Weight on Burning, Characteristics of Chemical Reactions, Chemical Changes, Comparison of Respiration and Burning, Condition for a Chemical change, Energy Changes in a Chemical Change, Types of Chemical Change - Direct Combination, Decomposition, Displacement, Double Decomposition with Examples
Chapter 3: Water
Shaalaa has a total of 95 questions with solutions for this chapter in Class 9 Chemistry. Concepts covered in Water are Concentration of a Solution, Concept for Water, Concept of Universal Solvent, Crystals and Crystallisation, Drying and Dehydrous Substances, Hard and Soft Water and Methods of Softening of Hard Water, Hydrated and Anhydrous Substances, Hygroscopic, Introduction of Water Pollution and Its Control, Physical and Chemical Properties of Water, Properties, Qualitative Effect of Temperature on Solubility, Saturated Solutions, Solubility, Solutions as 'Mixtures' of Solids in Water, Types of Hardness: Temporary Hardness and Permanent Hardness, Water as a Compound and as a Universal Solvent
Chapter 4: Atomic Structure and Chemical Bonding
Shaalaa has a total of 153 questions with solutions for this chapter in Class 9 Chemistry. Concepts covered in Atomic Structure and Chemical Bonding are Atomic Number, Atom - Its Structure, Bohr-bury Scheme, Bohr’S Model of Atom, Characteristic Properties of Electrovalent Compounds, Concept of Electrons Distributed in Different Orbits (Shells), Concept of Isotopes, Covalent (Molecular) Bond, Discovery of Electrons, Discovery of Nucleus, Discovery of Protons, Electrovalent (Or Ionic) Bond, Introduction to Atomic Structure and Chemical Bonding, Mass Number, Neutrons, Reason for Chemical Activity of an Atom, Valency Electrons
Chapter 5: The Periodic Table
Shaalaa has a total of 106 questions with solutions for this chapter in Class 9 Chemistry. Concepts covered in The Periodic Table are Atomic Number as Basis for Modern Periodic Law, Classification of Elements, Defects of the Modern Periodic Table, Dobereiner's Triads, Mendeleev’s Periodic Table, Merits of the Modern Periodic Table, Newland'S Law of Octaves, Position of Elements and Trends in the Modern Periodic Table, Study of Specific Groups, The Modern Periodic Table, Types of Elements, Uses of Periodic Table
Chapter 6: Study of the First Element - Hydrogen
Shaalaa has a total of 153 questions with solutions for this chapter in Class 9 Chemistry. Concepts covered in Study of the First Element - Hydrogen are Application of Activity Series in the Preparation of Hydrogen, Concept of Hydrogen, Hydrogen from Alkalies, Hydrogen from Dilute Acids, Hydrogen from Water, Hydrogen - Oxidation and Reduction, Laboratory Preparation of Hydrogen, Manufacture of Hydrogen, Position of the Non-metal (Hydrogen) in the Periodic Table, Preparation of Hydrogen, Properties and Uses of Hydrogen, Similarities Between Hydrogen and Halogens
Chapter 7: Study of Gas Laws
Shaalaa has a total of 80 questions with solutions for this chapter in Class 9 Chemistry. Concepts covered in Study of Gas Laws are Absolute Zero, Behaviour and Characteristic Properties of Gases, Conversion of Temperature from Celsius Scale to Kelvin Scale and Vice-versa, Derivation of Boyle’s Law, Gas Equation (Pressure, Volume and Temperature Relationship), Kelvin Scale of Temperature, Molecular Motion : Relationship of Temperature, Pressure and Volume, Pressure and Volume Relationship in Gases, Standard Temperature and Pressure, Study of Gas Laws, Temperature - Volume Relationship in Gases, The Effect of Moisture and Pressure, The Gas Laws, Van’t Hoff- Charles’ Law
Chapter 8: Atmospheric Pollution
Shaalaa has a total of 70 questions with solutions for this chapter in Class 9 Chemistry. Concepts covered in Atmospheric Pollution are Acid Rain - Composition, Cause and Its Impact, Air Pollution, Atmospheric Pollution, Effect of Global Warming, Meaning of Global Warming, Ozone Layer, Sources of Greenhouse Gases and Ways of Reducing Their Presence in the Atmosphere
Chapter 9: Practical Work
Shaalaa has a total of 63 questions with solutions for this chapter in Class 9 Chemistry. Concepts covered in Practical Work are Absolute Zero, Acid Rain - Composition, Cause and Its Impact, Air Pollution, Application of Activity Series in the Preparation of Hydrogen, Atmospheric Pollution, Atomic Mass, Atomic Number, Atomic Number as Basis for Modern Periodic Law, Atom - Its Structure, Behaviour and Characteristic Properties of Gases, Bohr-bury Scheme, Bohr’S Model of Atom, Burning - Definition and Conditions of Burning, Burning of Magnesium Or Candle to Show that Substances Gain Weight on Burning, Characteristic Properties of Electrovalent Compounds, Characteristics of Chemical Reactions, Chemical Changes, Chemical Equation, Chemical equations, Classification of Elements, Comparison of Respiration and Burning, Concentration of a Solution, Concept for Language of Chemistry, Concept for Water, Concept of Electrons Distributed in Different Orbits (Shells), Concept of Hydrogen, Concept of Isotopes, Concept of Universal Solvent, Condition for a Chemical change, Conversion of Temperature from Celsius Scale to Kelvin Scale and Vice-versa, Covalent (Molecular) Bond, Crystals and Crystallisation, Defects of the Modern Periodic Table, Derivation of Boyle’s Law, Discovery of Electrons, Discovery of Nucleus, Discovery of Protons, Dobereiner's Triads, Drying and Dehydrous Substances, Effect of Global Warming, Electrovalent (Or Ionic) Bond, Empirical Formula of a Compound, Energy Changes in a Chemical Change, Gas Equation (Pressure, Volume and Temperature Relationship), Hard and Soft Water and Methods of Softening of Hard Water, Hydrated and Anhydrous Substances, Hygroscopic, Hydrogen from Alkalies, Hydrogen from Dilute Acids, Hydrogen from Water, Hydrogen - Oxidation and Reduction, Introduction of Water Pollution and Its Control, Introduction to Atomic Structure and Chemical Bonding, Kelvin Scale of Temperature, Laboratory Preparation of Hydrogen, Manufacture of Hydrogen, Mass Number, Meaning of Global Warming, Mendeleev’s Periodic Table, Merits of the Modern Periodic Table, Molecular Mass, Molecular Motion : Relationship of Temperature, Pressure and Volume, Naming Certain Compounds, Neutrons, Newland'S Law of Octaves, Ozone Layer, Percentage Composition, Physical and Chemical Properties of Water, Position of Elements and Trends in the Modern Periodic Table, Position of the Non-metal (Hydrogen) in the Periodic Table, Preparation of Hydrogen, Pressure and Volume Relationship in Gases, Properties, Properties and Uses of Hydrogen, Qualitative Effect of Temperature on Solubility, Radicals, Reason for Chemical Activity of an Atom, Saturated Solutions, Similarities Between Hydrogen and Halogens, Solubility, Solutions as 'Mixtures' of Solids in Water, Sources of Greenhouse Gases and Ways of Reducing Their Presence in the Atmosphere, Standard Temperature and Pressure, Study of Gas Laws, Study of Specific Groups, Symbol of an Element, Temperature - Volume Relationship in Gases, The Effect of Moisture and Pressure, The Gas Laws, The Modern Periodic Table, Types of Chemical Change - Direct Combination, Decomposition, Displacement, Double Decomposition with Examples, Types of Elements, Types of Hardness: Temporary Hardness and Permanent Hardness, Uses of Periodic Table, Valency, Valency Electrons, Van’t Hoff- Charles’ Law, Water as a Compound and as a Universal Solvent, Writing Chemical Formulae - Formulae of Simple Compounds
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