Secondary Catalogue

Chemistry


Weird Wonderful Water

Weird Wonderful Water

Life in the Sea

This programme is about seawater. It is the most important liquid on Earth, not only from its sheer volume, but also because it has remarkable qualities. A few of them, like buoyancy, are common to all liquids - but seawater is also the cradle of...Show More
The Modern Periodic Table

The Modern Periodic Table

Periodic Classification of Elements

The elements in the Periodic Table are roughly divided into metals, metalloids and non - metals. There are seven periods in the Periodic Table. The vertical columns in a Periodic Table are called groups and there are 18 groups in the Periodic Table.
Characteristics of Groups: Valence Electrons and Valency

Characteristics of Groups: Valence Electrons and Valency

Periodic Classification of Elements

The groups in the Periodic Table are arranged vertically. There are 18 groups in the Periodic Table. All the elements in one group have the same electronic configuration and hence the same number of valence electrons and the same valency.
Characteristics of Groups: Chemical Reactivity and Nature of Oxides

Characteristics of Groups: Chemical Reactivity and Nature of Oxides

Periodic Classification of Elements

The chemical reactivity of metals increases from the top to the bottom in a group, while the chemical reactivity of non-metals decreases as we move down in the group. On moving down in a group of the Periodic Table, there is no change in the...Show More
Physical Properties of Metals

Physical Properties of Metals

Metals and Non-metals

Metals are generally solid, hard and strong, have a metallic lustre and high melting and boiling points. Metals are also malleable, ductile, and good conductors of heat and electricity.
Expansion in Solids

Expansion in Solids

Heat in the Environment

Solids expand on heating and contract on cooling. Different solids expand by different amounts for the same rise in temperature.
Extraction of Moderately Reactive Metals: Reduction of Metal Oxides to Metal

Extraction of Moderately Reactive Metals: Reduction of Metal Oxides to Metal

Metals and Non-metals

Moderately reactive metals are extracted from their metal oxides by the process called reduction. The reduction of metal oxides, by heating with carbon, in the form of coke, is called smelting, and the reduction of metal oxides to metal, using...Show More
Characteristics of Groups: Metallic Character

Characteristics of Groups: Metallic Character

Periodic Classification of Elements

On moving down in a group of the periodic table, the metallic character of the elements increases while their non-metallic character decreases. Metals have a tendency to lose electrons to form positive ions and are hence known as electropositive...Show More
How a Change Can Happen

How a Change Can Happen

Changes around Us

Objective: To study the ways a change is brought about. Learning outcomes - students will be able to: 1. Describe the various ways to bring about a change 2. Illustrate the process of mixing to bring change
The Haber Process

The Haber Process

Chemical Equilibrium

How is chemical equilibrium important for making ammonia? This video demonstrates how an understanding of chemical equilibrium and Le Chatelier’s principle is applied in the Haber-Bosch Process, making the production of ammonia more efficient....Show More
Changing Equilibrium Systems: Increasing the Amount of a Product

Changing Equilibrium Systems: Increasing the Amount of a Product

Chemical Equilibrium

What happens when you add more product to an equilibrium? This video demonstrates how an increase in products affects reaction rates in accordance with Le Chatelier’s principle. Students will observe how the appearance of a solution of sodium...Show More
Equilibrium Law

Equilibrium Law

Chemical Equilibrium

What is an equilibrium constant and how do we work it out? This video explains various aspects of the equilibrium constant, including what it is, how to calculate it and how it can be affected by other factors like temperature and pressure....Show More
Competing Equilibria

Competing Equilibria

Chemical Equilibrium

How is chemical equilibrium important for cellular respiration? This video explains how two competing equilibrium reactions involving haemoglobin are at work in the process of cellular respiration. Clear explanations of this life-or-death example...Show More
Changing Equilibrium Systems: Increasing the Pressure

Changing Equilibrium Systems: Increasing the Pressure

Chemical Equilibrium

What happens when you increase the pressure on an equilibrium? This video demonstrates how changing pressure affects reaction rates in accordance with Le Chatelier’s principle. Students will observe the colour of a gaseous mixture of nitrogen...Show More
Changing Equilibrium Systems: Changing the Temperature

Changing Equilibrium Systems: Changing the Temperature

Chemical Equilibrium

What happens when you turn up the heat in an equilibrium? This video demonstrates how changing temperature affects reaction rates in accordance with Le Chatelier’s principle. Students will observe the colour of a solution of cobaltous chloride...Show More
Changing Equilibrium Systems: Removing a Product

Changing Equilibrium Systems: Removing a Product

Chemical Equilibrium

What happens when you remove products from an equilibrium? This video demonstrates how a decrease in the amount of product affects reaction rates in accordance with Le Chatelier’s principle. Students will observe how the appearance of a...Show More
Le Chatelier's Principle

Le Chatelier's Principle

Chemical Equilibrium

What does Le Chatelier have to do with chemical equilibrium? This shows how various changes can affect the balance of a reaction in equilibrium and favour one reaction over another, as predicted by Le Chatelier’s principle. Easy-to-understand...Show More
Changing Equilibrium Systems: Increasing the Concentration of a Reactant

Changing Equilibrium Systems: Increasing the Concentration of a Reactant

Chemical Equilibrium

What happens when you add more reactant to an equilibrium? This video demonstrates how an increase in reactants affects reaction rates in accordance with Le Chatelier’s principle. Students will observe how the colour of a solution of ferric...Show More
Reversible Reactions

Reversible Reactions

Chemical Equilibrium

What does it mean if a reaction is in equilibrium? This video introduces key concepts such as reversible and irreversible reactions, forward and reverse reactions and equilibrium. Easy-to-understand explanations and examples of chemical...Show More
Training Day: Covalent & Ionic Bonds

Training Day: Covalent & Ionic Bonds

The Periodic Games

The start of The Periodic Games is just a day away. As attraction sparks between Chlorine and Sodium, President H2O fears that their new bond could incite revolution. Meanwhile, the other tributes are in training, forming covalent bonds that...Show More
Meeting the Tributes: Elements 1-18

Meeting the Tributes: Elements 1-18

The Periodic Games

When Chlorine Everclean voluntarily takes her sister’s place in The 75th Periodic Games, hosts Titanium Alloy and Caesium Lepton are taken by surprise! Chlorine isn’t as strong a contender as her little sister Fluorine, and the other 17...Show More
Emerging Nanotechnology

Emerging Nanotechnology

Nanoparticles

Nanotechnology has found its way into our homes and everyday lives. This clip reveals some amazing applications that are part of our everyday lives now, and takes a look nanotechnology in the future and the revolutionary impact it will continue...Show More
Properties of Nanoparticles

Properties of Nanoparticles

Nanoparticles

Nanotechnology has diverse applications and phenomenal potential. This clip examines the properties of nanoparticles and the amazing range of applications – now and into the future. It also looks at some of the risks of this emerging field of...Show More
Measuring Nanoparticles

Measuring Nanoparticles

Nanoparticles

Nanoparticles are tiny bits of material with a diameter between one and 100 nanometres. This clip explores the tiny world of nanoparticles and how their size and structure make them so useful, including the square-cube law and the relationship...Show More
Types of Pure Substances, Solutions and Mixtures

Types of Pure Substances, Solutions and Mixtures

Objective: To learn about the types and properties of pure substances, various types of solutions. Learning outcomes - students will be able to: 1. Define pure substances 2. Classify pure substances as elements and compounds 3. List...Show More