Chapter 1

The Language of Chemistry

Symbols of elements

medium • 1 min read

Valency and radicals

medium • 2 min read

Chemical formulae writing

medium • 3 min read

Chemical equations and balancing

medium • 4 min read

Atomic weight and Molecular weight

medium • 5 min read

Chapter 2

Chemical Changes and Reactions

Types of chemical changes

medium • 1 min read

Direct combination and decomposition

medium • 2 min read

Displacement and double decomposition

medium • 3 min read

Energy changes in chemical reactions

medium • 4 min read

Characteristics of chemical reactions

medium • 5 min read

Chapter 3

Water

Water as a universal solvent

medium • 1 min read

Solutions (saturated, unsaturated, supersaturated)

medium • 2 min read

Solubility and its variation with temperature

medium • 3 min read

Hard and soft water

medium • 4 min read

Methods to remove hardness

medium • 5 min read

Chapter 4

Atomic Structure and Chemical Bonding

Structure of atom (electrons, protons, neutrons)

medium • 1 min read

Atomic number, mass number, isotopes

medium • 2 min read

Electronic configuration (up to atomic number 20)

medium • 3 min read

Electrovalent (Ionic) bonding

medium • 4 min read

Covalent bonding

medium • 5 min read

Chapter 5

The Periodic Table

Dobereiner's Triads, Newlands' Octaves

medium • 1 min read

Mendeleev's Periodic Table

medium • 2 min read

Modern Periodic Table structure

medium • 3 min read

Groups and Periods

medium • 4 min read

Periodicity in properties

medium • 5 min read

Chapter 6

Study of the First Element - Hydrogen

Position of hydrogen in periodic table

medium • 1 min read

Laboratory preparation of hydrogen

medium • 2 min read

Industrial manufacture (Bosch process)

medium • 3 min read

Properties of hydrogen

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Uses of hydrogen and oxidation/reduction

medium • 5 min read

Chapter 7

Study of Gas Laws

Behavior of gases

medium • 1 min read

Boyle's Law

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Charles's Law

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Gas equation (PV=RT)

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Standard Temperature and Pressure (STP)

medium • 5 min read

Chapter 8

Atmospheric Pollution

Acid rain - causes and impacts

medium • 1 min read

Global warming and Greenhouse effect

medium • 2 min read

Ozone depletion

medium • 3 min read

Air pollutants

medium • 4 min read

Control of air pollution

medium • 5 min read

Chapter 9

Practical Chemistry

Identification of gases (H2, O2, CO2, Cl2, HCl, SO2, NO2, NH3)

medium • 1 min read

Action of heat on given substances

medium • 2 min read

Action of dilute acids on given substances

medium • 3 min read

Flame tests

medium • 4 min read

Preparation of simple salts

medium • 5 min read