How to Calculate Valency?

Section 1

Matter in Our Surroundings - Part 1

1

Introduction to Matter in Our Surroundings

2

States of Matter

3

Change in States of Matter

4

Evaporation

Section 2

Matter in Our Surroundings - Part 2

1

Solving Questions – Part 1

2

Solving Questions – Part 2

3

Solving Questions – Part 3

4

Solving Questions – Part 4

5

Exercises – Part 1

Section 3

Matter in Our Surroundings - Part 3

Section 4

Is Matter Around Us Pure - Part 1

1

Introduction

2

Types of Mixtures; Solutions

Section 5

Is Matter Around Us Pure - Part 2

1

Concentration of a Solution

2

Suspensions and Colloids

3

Colloids Explained

4

In text Questions on Page 15 and 18

5

Seperating the Components of a Mixture – Part 1

Section 6

Is Matter Around Us Pure - Part 3

1

Separating the Components of a Mixture – Part 2

2

Chromatography and Crystallization

3

Physical and Chemical Changes

Section 7

Is Matter Around Us Pure - Part 4

Exercise 4,6,7,8,9,10,11

Section 8

Atoms and Molecules - Part 1

Modern Day Symbols of Atoms of Different Elements

4

Atomic Mass

Section 9

Atoms and Molecules - Part 2

1

Molecules of Elements and Compounds ; Ions

2

Writing Chemical Formula – Part 1

3

Writing Chemical Formula – Part 2

4

Molecular Mass and Mole Concept

Section 10

Atoms and Molecules - Part 3

1

Example 3.3, 3.4, 3.5

Section 11

Structure of Atom - Part 1

1

Introduction

2

Rutherford’s Model of an Atom – Part 1

3

Rutherford’s Model of an Atom – Part 2

Section 12

Structure of Atom - Part 2

1