A chemical reaction caused by the absorption of light.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...

A substance that removes oxygen from, or donates electrons to, another substance during a reaction.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise...

How French Chemist Antoine Lavoisier revealed the true significance of oxygen and brought about the birth of modern chemistry. Chemistry - Periodic Table - Learning Points. Antoine Lavoisier experimented with weighing substances before...

The Earth is billions of years old and was once a very hostile place. Eventually, a single cell was formed that evolved and reproduced. What conditions produced this first life on Earth? Biology - Cells And DNA - Learning Points....

A measurement of the efficiency of a chemical reaction, calculated by dividing the actual amount of product by the theoretical maximum amount.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just...

Discover why fat is important to our bodies, how and why it is stored - and why getting rid of excess body fat is so much more difficult than gaining it in the first place. Biology - Healthy Living - Fat is stored by the body when you...

Why and how do substances dissolve? Discover what happens when you create a solution. Chemistry - Atoms And Bonding - Learning Points. A solution is the mixture formed when a solid dissolves in a liquid. A solvent is a liquid that can...

Journey into the chloroplast, where photosynthesis takes place, to learn how plants convert sunlight into usable chemical energy - one of the most vital processes on Earth. Biology - Plants - Learning Points. Leaves are small...

Discover that altering the number of successful collisions between particles is key to changing the rate of chemical reactions. How this can be manipulated? Chemistry - ReactionsLearning Points. New substances are made when particles...

We look at how the mass of wire wool changes when it is burned. Wire wool is almost 99% iron. When we burn it, it combines chemically with oxygen from the air to form iron(III) oxide. The mass of the product is more than the mass of the...

We depend on oxygen for life. But in fact, oxygen is corrosive: ageing us, damaging cell DNA, and 'rusting' us from the inside. Biology - Human Body - Learning Points. Oxygen is vital in powering every cell and process in the human body....

A substance that increases the rate of a chemical reaction without itself being permanently changed or used up. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Or burning, a chemical reaction that requires an initial source of heat, a fuel, and an oxidising agent such as oxygen, and releases energy as heat, and often light. A Twig Science Glossary Film. Key scientific terms defined in just 60...

What is it? ... These are rusty nails!
<

br/>

Material processes - Changing materials - Chem
i

cal reactions


A Twig Tidbit Film - Big Reveal. The image zooms out from an extreme close-up to full frame. The...

What is it? ... It's an explosion!
<

br/>

Material processes - Changing materials - More chem
i

cal reactions


A Twig Tidbit Film - Pixelate. A pixelated image unscrambles. The children have to guess what it...

Did you know that bioluminescence is produced by a chemical reaction? <br<b<br/>r/>/>


Material processes - Changin<br<b<br/>r/>/>g materials - Chemical reactions


A Twig Tidbit Film - Did you know? A fascinating fact is revealed.

Did you know that rust is a product of a chemical reaction called oxidation?
<

br/>

Material processes - Changing materials - Chem
i

cal reactions />

Learning Points
>

Rusting is also called...

What chemical and physical changes are at play in cake baking.
<

br/>

Material processes - Changing materials - More chem
i

cal reactions />

Learning Points
Chemica
l

changes are usually...

Six processes are shown on screen ... can you spot which involve chemical reactions?
<

br/>

Material processes - Changing materials - Chem
i

cal reactions />

Learning Points
Chemical changes


are...

Did you know that the Statue of Liberty hasn't always been green?
<

br/>

Material processes - Changing materials - Chem
i

cal reactions />

Learning Points
Chemica
l

reactions produce new...

Find out what makes a mixture, and what happens when materials react chemically.
<

br/>

Material processes - Separating mixtures - What


is a mixture? />

Learning Points
A mixture is formed when...

What are the three factors needed to make something burn?
<

br/>

Material processes - Changing mater
i

als - Burning />

Learning Points /

> Burning is a chemical reaction.





Burning...

By the end of this learning object, the student will be able to: Summarize the important points of chemical equations and reactions.28728

Learn about the components of a chemical reaction, including reactants and products, and how chemical bonds are affected during the process. Explore examples like cookies and rusty bike fenders to understand these concepts...