Secondary Catalogue

Chemistry


Fossil Fuels: Part Two

Fossil Fuels: Part Two

DK Eyewitness: Climate Change

For centuries, humans have relied on fossil fuels to power our world. Oil and gas are hydrocarbons that have helped fuel our modern way of living, but burning them has a devastating impact on the natural world.
Fossil Fuels: Part One

Fossil Fuels: Part One

DK Eyewitness: Climate Change

For centuries, humans have relied on fossil fuels to power our world. Coal fuelled the Industrial Revolution but also had a devastating impact on people and the natural environment. Let’s dig a little deeper into our use of coal.
The Carbon Cycle

The Carbon Cycle

DK Eyewitness: Climate Change

The Carbon Cycle is the process by which carbon is constantly absorbed, stored and recycled by living and non-living things, thereby maintaining the delicate balance that supports all life on Earth.
The Greenhouse Effect

The Greenhouse Effect

DK Eyewitness: Climate Change

Earth’s atmosphere acts like a greenhouse, deflecting the fiercest of the Sun’s rays while retaining heat that would otherwise escape at night. This is known as the greenhouse effect and it’s a process that’s essential to life on Earth.
Physical Separation Techniques

Physical Separation Techniques

Separating Mixtures

The method used to separate mixtures depends on the state of the matter, the component substances, the type of mixture and the properties of the particles. This video explains the physical separation techniques of filtration, evaporation,...Show More
Simple Separation Methods

Simple Separation Methods

Separating Mixtures

Mixtures, are combined physically, not chemically, so they can be separated back into their original components by physical means. This video explains the simple separation techniques of using magnets, sieving and filtration, gravity separation...Show More
The Particle Model and States of Matter

The Particle Model and States of Matter

Changing States of Matter

All matter contains tiny particles, and the way these particles behave is different in different states of matter. This video introduces viewers to the differences between solids, liquids and gases, with reference to the particle model of matter....Show More
Energy and Physical Changes of State

Energy and Physical Changes of State

Changing States of Matter

Substances are affected by changing their temperature, even if there is no change of state. This video explains how matter can expand or contract when heat energy is transferred, and why water is a unique substance because of how it expands and...Show More
Heat Energy and Change of State

Heat Energy and Change of State

Changing States of Matter

Matter changes state by adding or taking away heat energy. But what happens to the energy and temperature when the state of matter changes? This video explains what happens when water on Earth changes state, exploring latent heat and the water...Show More
Mixtures in Everyday Life

Mixtures in Everyday Life

Separating Mixtures

Every day, we use mixtures, most often solutions, suspensions and colloids, for many different purposes. This video explores everyday examples of solutions, such as nail polish and nail polish remover; suspensions, such as sand in water; and...Show More
Types of Mixtures

Types of Mixtures

Separating Mixtures

Mixtures can be combinations of matter in any state, but no new substance is formed. This video introduces viewers to solutions, suspensions and colloids, explaining their properties and giving everyday examples of these types of mixtures. Clear...Show More
States of Matter All Around Us

States of Matter All Around Us

Changing States of Matter

In our everyday lives, we make use of the physical properties of matter, which sometimes involves a change of state. This video explores some common examples of how humans use physical changes of state for many purposes, including steam engines,...Show More
Changes of State

Changes of State

Changing States of Matter

Matter can change between solid, liquid and gas when it is heated up or cooled down: a transfer of heat energy. This video explains how water changes state, through melting, evaporation or boiling, freezing, sublimation and deposition. Clear...Show More
Doctors and Science

Doctors and Science

Miniclips

Science helps people in many occupations, such as nurses, doctors, dentists, mechanics, gardeners, clothing designers, builders and engineers. In this video we answer some questions about how doctors use science in their occupation.
What Is Paper Chromatography?

What Is Paper Chromatography?

OUP Chemistry

Paper chromatography is a way of identifying and separating compounds into different chemicals, based on how far each chemical travels up some filter paper dipped in solvent.
How Do Two Gases Diffuse?

How Do Two Gases Diffuse?

OUP Chemistry

The diffusion of molecules is crucial for life. So what affects the diffusion of molecules and what cause gases to diffuse at different speeds?
How Are Ionic and Covalent Bonds Formed?

How Are Ionic and Covalent Bonds Formed?

OUP Chemistry

Ionic and covalent bonds both involve the moving of electrons, allowing two atoms to each achieve complete outer shells. But how does this happen?
What Happens When Metal Reacts with an Acid or Water?

What Happens When Metal Reacts with an Acid or Water?

OUP Chemistry

This film explores how metals react with water, acids and oxygen, in terms of the reactivity series.
How Are Chemical Equations Balanced?

How Are Chemical Equations Balanced?

OUP Chemistry

If you're studying chemistry, you need to know how to balance your equations. This short film will explore how it is achieved.
What Factors Affect Reaction Rate?

What Factors Affect Reaction Rate?

OUP Chemistry

What factors affecting rate of a reaction limited to temperature, concentration, pressure and surface area.
How Is Iron Produced in a Furnace?

How Is Iron Produced in a Furnace?

OUP Chemistry

Have a blast in understanding how iron is produced in a furnace.
How Do Equilibrium Reactions Work?

How Do Equilibrium Reactions Work?

OUP Chemistry

We explore how equilibrium reactions work, with reference to reversibility and changing conditions of temperature, pressure or concentration.
How Is Ammonia Produced in the Haber Process?

How Is Ammonia Produced in the Haber Process?

OUP Chemistry

What is the Haber Process and how does it work?
What Is an Acid-Base Titration?

What Is an Acid-Base Titration?

OUP Chemistry

In a laboratory how do we carry out an acid-base titration? We investigate.