Class VIII

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Wk. 1 & 2

Chapter 1 : Matter

Kinetic theory of matter

Change of state of matter

Law of conservation of mass

Wk. 3 & 4

Chapter 2 : Physical and Chemical Changes

Physical and Chemical Changes - Classification with examples

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Wk. 1 & 2

Chapter 3: Elements, Compounds & Mixtures

Brief explanation of elements, comp. & mixtures.

Classification of matter into elements, compounds, and mixtures.

Wk. 3 & 4

Homogeneous & heterogeneous mixture.

Separation of the components of a mixture.

Emphasis on the principle of separation.

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Wk.1& 2

Chapter 4: Atomic Structure

Introduction of the structure of atom, Dalton’s at. theory.

Subatomic particles- electron, proton, neutron.

Atomic number & mass number.

Wk. 3 & 4

Chapter 5: Language of Chemistry

Symbols of elements

Valency of elements & radicals

Formula of compounds on the basis of valencies of elements & radicals

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Wk. 1 & 2

Chapter 5. Continued

Chemical equations and balancing of chemical equations applying the law of conservation of

mass.

Limitations & information gathered from a chemical equation .

Wk. 3 & 4

Chapter 6: Chemical Reactions

Types of reactions- combination, decomposition, displacement & double displacement.

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Wk. 1 & 2

Chapter 6. Continued

Activity series of metals.

Exothermic & endothermic reactions with examples

Wk.3 & 4

Classification of oxides- acidic, basic, neutral & amphoteric. Reactions of acidic oxide with base, basic oxides with acids, amphoteric oxides with both acid & base.

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Wk. 1& 2

Chapter 7: Hydrogen

Preparation of hydrogen from water

introduction to electrolysis, electrodes & electrolytes.

Wk. 3 & 4

Laboratory preparation

Bosch process

Properties and uses

Oxidation & reduction

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Wk. 1 & 2

Chapter 8: Water

Water as universal solvent

Solutions, suspension & colloids

Hydrated & anhydrous substances

Wk. 3 & 4

Reaction of water with cold water, hot water & steam

Hard & soft water: causes & removal of hardness

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Wk. 1 & 2

Chapter 9: Carbon & its Compounds

Allotropes of carbon – crystalline & amorphous

Uses of diamond, graphite, coke, coal, soot.

Wk. 3 & 4

Laboratory preparation, properties, reactions & uses of carbon dioxide.

Properties, reducing properties & uses of CO.

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REVISION & MOCK TEST