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
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
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
Nucleophilic Substution Reaction

Nucleophilic Substution Reaction

Organic Chemistry

Nucleophilic substitution is a reaction in which an electron rich group, called nucleophile, substitutes an outgoing group called leaving group, which carries with it the bonding electron pair. Good leaving groups are weak bases.Alkyl halides...Show More
Mole Ratios

Mole Ratios

Quantities in Chemical Reactions

A balanced chemical equation represents the relative number of the reactant and product species taking part in a reaction. The ratio of the number of moles of any two substances in a chemical reaction is called their mole ratio. The mole ratio is...Show More
Law of Definite Proportions

Law of Definite Proportions

Quantities in Chemical Reactions

According to the law of definite proportions ’A chemical compound always contains exactly the same proportion of elements by weight’. In the compound water, obtained from any source, such as rain or a river, the masses of hydrogen and oxygen...Show More
Chlorine

Chlorine

P-Block Elements

Chlorine, a member of the halogen series of elements, is a greenish-yellow pungent gas. It is a highly-reactive element and can undergo various chemical reactions.
Substitution Nucleophilic Bimolecular Reactions

Substitution Nucleophilic Bimolecular Reactions

Organic Chemistry

Substitution nucleophilic bimolecular or SN2 reactions occur in a single step. In this reaction, both bond - making and bond - breaking occur at the same time. It’s a second order or bimolecular reaction, in which the rate of the reaction...Show More
Radical Addition: Anti-Markonikov Rule

Radical Addition: Anti-Markonikov Rule

Organic Chemistry

The anti-Markovnikov rule describes the regiochemistry where the substituent is bonded to a less substituted carbon, rather than the more substitued carbon. This process is quite unusual, as carboncations which are commonly formed during alkene,...Show More
E-Z System for Geometric Isomers

E-Z System for Geometric Isomers

Organic Chemistry

In the E-Z system for geometric isomers, if two groups or atoms of higher priority are on the same side of the double bond, then they are called Z isomers, and when they are on the opposite sides of the double bond, then they are called E...Show More
Chemical Reactions of Carbon Compounds

Chemical Reactions of Carbon Compounds

Carbon and its Compounds

This video covers a number of different chemical reactions that carbon compounds can have. Carbon compounds can undergo combustion, substitution, addition, and oxidisation reactions. The video also looks at chemical reactions that ethanol and...Show More
Nomenclature of Carbon Compounds

Nomenclature of Carbon Compounds

Carbon and its Compounds

This video introduces hydrocarbons, and highlights the difference between saturated and unsaturated hydrocarbons. It also introduces the International Union of Pure and Applied Chemistry naming conventions for straight chained hydrocarbons,...Show More
Covalent Bonding in Carbon Compounds

Covalent Bonding in Carbon Compounds

Carbon and its Compounds

Carbon is a versatile element. Its tetravalent nature, to form strong covalent bonds and the property of catenation enables it to form a large number of compounds. This video introduces covalent bonds and their properties, with a focus on how...Show More
Soaps and Detergents

Soaps and Detergents

Carbon and its Compounds

This video shows how soap is made using a process called saponification. It looks at the structure of a soap molecule and how it differs from detergent molecules, resulting in different cleansing actions.
Introduction to Carbon Compounds

Introduction to Carbon Compounds

Carbon and its Compounds

In this video students will learn about functional groups, the atom or groups of atoms that give a characteristic property to a compound. The video also introduces homologous series—organic compounds that have similar structures—and...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