Chapter 1: Matter and Its Composition
Shaalaa has a total of 119 questions are solved for this Chapter in Class 7 Chemistry. Chapters covered in Matter and Its Composition are Concept of Composition of Matter, Definition of Matter, The Matter Has Mass and Occupies Space - Explanation.
Chapter 2: Physical and Chemical Changes
Shaalaa has a total of 98 questions are solved for this Chapter in Class 7 Chemistry. Chapters covered in Physical and Chemical Changes are Chemical Change - Formation of a New Product with New Properties., Classification as Physical and Chemical Change., Concept of Physical and Chemical Changes, Differentiating Between Physical and Chemical Change., Types of Change Involved When There is a Change of Energy., Types of Change Involved When There is a Change of State of Matter
Chapter 3: Elements, Compounds and Mixtures
Shaalaa has a total of 77 questions are solved for this Chapter in Class 7 Chemistry. Chapters covered in Elements, Compounds and Mixtures are Chromatography as a Separation Technique, Concept of Elements, Compounds and Mixtures (Experimental Techniques), Concept of Mixtures and Compounds, Concept of Paper Chromatography, Difference Between Mixtures and Compounds on the Basis of the Chemical Composition of Constituents, Identification of Elements, and Compounds - Representation of Their Symbols and Formulae, Principle Behind Each Separation Technique., Recall that a Mixture is Formed When Two Or More Substances Are Mixed in Any Proportion, Separation Techniques - Distillation, Separation Techniques - Evaporation, Separation Techniques - Fractional Distillation, Separation Techniques - Sublimation, Separation techniques - use of separating funnel, Types of Mixtures -homogeneous and Heterogeneous Mixtures, Types of Mixtures - on the Basis of State: Solid-Solid;Solid-liquid;Liquid-liquid.
Chapter 4: Atoms, Molecules and Radicals
Shaalaa has a total of 109 questions are solved for this Chapter in Class 7 Chemistry. Chapters covered in Atoms, Molecules and Radicals are Atomicity of Elements and Compounds – Mono Atomic, Diatomic, Triatomic, Polyatomic, Concept of Atomic Structure, Concept of Atoms, Molecules and Radicals, Concept of Independent Existence, Concept of Molecule, Concept of Radical, Concept of Valency, Elements in the Periodic Table with Their Names and Symbols, Properties of an Element Depend Upon the Atoms Constituting It
Chapter 5: Language of Chemistry
Shaalaa has a total of 86 questions are solved for this Chapter in Class 7 Chemistry. Chapters covered in Language of Chemistry are Characteristics of Occurrence of a Chemical Reaction, Chemical Equations - Emphasize on the Observational Skills and the Names of Products Formed, Chemical Equations - Some Examples of Word Equations for Practice., Chemical Equations - Word Equations for Chemical Reactions, Concept of Chemical Reactions, Concept of Language of Chemistry
Chapter 6: Metals and Non-metals
Shaalaa has a total of 119 questions are solved for this Chapter in Class 7 Chemistry. Chapters covered in Metals and Non-metals are Classification of Elements as Metals and Non-metals., Concept of Metalloids - metals and non-metals – e.g. silicon, germanium,tungsten, antimony), Concept of Metals, Non-metals, Corrosion of Iron - Avoiding Contact with Air and Water Vapour, Corrosion of Iron (Rusting), Metals and Non-metals with the General Properties (Lustre,Conduction of Electricity, Heat, Malleability, Ductility, Sonority, Melting Point, Boiling Point, Density, Strength.), Properties of Metals, Non-metals, Uses of Certain Metals (Iron, Gold, Copper, Aluminium, Zinc, Lead, Magnesium)., Uses of Metalloids, Ways to Prevent Rusting (Oiling, Painting, Chrome Plating, Galvanization, Tinning)
Chapter 7: Air and Atmosphere
Shaalaa has a total of 199 questions are solved for this Chapter in Class 7 Chemistry. Chapters covered in Air and Atmosphere are Composition of Air and Uses of Its Components., Concept for Oxygen - Combustion., Concept of Air and Atmosphere, Concept of Air - Mixture of Gases., Concept of Air Quality, Concept of Products Formed in Acid Rain, Concept of Respiration and Combustion and Rusting, Effects of Acid Rain., Equations for Reactions of Metals and Non-metals (S, C, P, Na, K, Ca, Mg) with O, Mass Change During Burning (Burning of Magnesium and Candle)., Study the Properties of Oxygen
Selina Solutions for Class 7 Chemistry
Class 7 Selina solutions answers all the questions given in the Selina textbooks in a step-by-step process.
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