Curated Video
Friction
Friction can be friend or foe. What is friction, how does it affect our lives and how can we alter it? Physics - Forces - Learning Points. Friction is a resistive force between surfaces moving at different velocities. Friction is...
Curated Video
Plants and Medicine
Discover how artichokes, garlic and poppies play important roles in medicine, pain management and the treatment of disease. Biology - Plants - Learning Points. The medicinal properties of plants have saved countless lives. Over half of...
Curated Video
Kiwi Fruit DNA
We extract the DNA from a kiwi fruit by mashing it with detergent liquid, salt and water. The mixture is then filtered and incubated before a layer of chilled ethanol is added. The jelly-like DNA can then be extracted. Biology - Cells...
Curated Video
Iron and Luminol
We use potassium ferricyanide and luminol indicator to show how forensic scientists detect blood at crime scenes. The luminol indicator contains luminol, sodium hydroxide and hydrogen peroxide. When luminol comes into contact with the...
Curated Video
Forming Iron Sulfide
We examine the different properties of iron and sulfur when they are mixed and when they are chemically combined. When iron and sulfur are mixed they retain their individual properties. When they react chemically to form iron sulfide...
Curated Video
Science of Addiction
Many drug users become drug addicts, but why is this? What changes to cause a person to become addicted to drugs? Biology - Healthy Living - Millions of people are addicted to drugs worldwide. Drugs target the reward center of the brain....
Curated Video
Non-Newtonian Liquids
Introducing the liquids whose behaviours seem to defy the accepted states of matter. What are they and why don't they behave as we predict? Chemistry - Atoms And Bonding - Learning Points. Newtonian liquids take the shape of their...
Curated Video
Radioactive Half-Life
Discover how radioactive substances change over time, and how this affects whether they are hazardous to humans. Physics - Energy And Radioactivity - Learning Points. Dangerous radioactive substances will not be dangerous forever due to...
Curated Video
Buffer
A substance that maintains a solution in a narrow range of pH. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Enzyme
A biological catalyst. Enzymes are specialised proteins that speed up biochemical reactions. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
Curated Video
Product
A substance produced as the result of a chemical reaction. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Fluorescent
A fluorescent substance is one that absorbs light at one wavelength and re-emits the energy as light at another wavelength, usually longer, a phenomenon called fluorescence. A Twig Science Glossary Film. Key scientific terms defined in...
Curated Video
Density - Mass per Volume
Mass per unit of volume. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key curriculum...
Curated Video
Soluble
Any substance that can dissolve in another is said to be soluble; though a substance may be soluble in one liquid but insoluble in another. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...
Curated Video
Catalyst
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...
Curated Video
Irritant
A substance that produces inflammation or pain on contact with skin, eyes, the respiratory system or other membranes such as stomach linings. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...
Curated Video
What is a mixture?
Find out what makes a mixture, and what happens when materials react chemically. Material processes - Separating mixtures - What is a mixture? Learning Points A mixture is formed when different materials are combined without chemical...
Curated Video
The wonder of water
We use water every day ... but what do you really know about it? Material processes - Solids, liquids and gases - Characteristics of water Learning Points Water is the only substance on Earth that occurs naturally in all three states....
Curated Video
Minerals
Discover the world of minerals and learn about their uses. Material processes - Classifying materials - Minerals Learning Points Minerals are naturally occurring substances with a unique chemical make-up. Minerals have many uses. The...
Curated Video
The 3 Different Types of Solutions EXPLAINED!
There are 3 different types of solutions - unsaturated, saturated and supersaturated. The main difference between these 3 types of solutions is the amount of solute in each type of solution. In this video, we explain the 3 different...
Curated Video
Specific Rotation: Measuring Optical Activity
Specific rotation is a standardized measure of how much a chiral compound rotates plane-polarized light. It's dependent on the substance’s concentration, the path length of the light, and the temperature, providing key insights into a...
Curated Video
Matter and its Construction: States and Properties of Matter
By the end of this learning object, the student will be able to: Recognize the concept of matter. List the properties of matter. Compare among the three state of matters.4426
Curated Video
Matter and its Construction: Heat of Fusion and Vaporization
By the end of this learning object, the student will be able to: Recognize the concept of heat of fusion and vaporization16331
Curated Video
Reflection and Refraction of Light: Refracted Light
By the end of this learning object, the student will be able to: Recognize the concept of light refraction.86732