Curated Video
Metabolism
The chemical reactions that occur in all living cells to extract, convert, and use the energy from food, to fuel all other cell processes. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...
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Changing pitch – Did you know?
Did you know that a person singing at the right frequency at a high volume can cause a glass to shatter? Physical processes - Sound - Changing pitch Learning Points At certain frequencies sound waves can shatter glass. A Twig Tidbit Film...
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Thermos flask
How do these flasks work to keep drinks at a constant temperature? Material processes - Changing materials - Insulation Learning Points Thermal insulators do not allow heat energy to flow easily through them. Vacuums are insulators...
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Sound is energy
Understand that sound is a form of energy created by vibrations. Physical processes - Sound - What is sound? Learning Points Sound is a form of energy. Sound travels in waves away from the source. Sound waves travel in all directions....
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What is a solid?
What properties do solids, liquids and gases have? Material processes - Solids, liquids and gases - Solids Learning Points Solids have a fixed shape that can only be changed by external force. Solids have a fixed volume. The molecules in...
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Condensation and freezing
Why do water drops form on cold windows and why does water freeze? Material processes - Solids, liquids and gases - Changes of state Learning Points Condensation is the change of state from gas to liquid. Freezing is the change of state...
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Everyday liquids
What are the properties of a liquid? Material processes - Solids, liquids and gases - Liquids Learning Points Liquids do not have a fixed shape. The speed at which a liquid flows is known as viscosity. Liquids have fixed volume. The...
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Heat energy
Discover that heat energy can turn a solid metal into liquid. Physical processes - Energy and energy transfer - Heat and temperature Learning Points Heat energy always travels from a hotter to a cooler area. Heat energy causes molecules...
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What is a gas?
What are the properties of a gas? Material processes - Solids, liquids and gases - Gases Learning Points Gases do not have a fixed shape and so move to fill their container. The molecules in gases are widely spaced and move about...
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Why is the Sky Blue? - Atmospheric Colors
Find out why the sky is blue. Physical processes -Light - White light Learning Points The Sun emits white light. White light can be split into the spectrum of colours by a prism. Different colours have different wavelengths. A Twig...
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Why do hot air balloons float?
Find out how hot air balloons work. Material processes - Solids, liquids and gases - Gases Learning Points Air is made up of different gases. The molecules in gas are widely spaced. When heated the molecules of a gas move around and...
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Why is there no sound in space?
Find out why there is no sound in space. Physical processes -Sound - How does sound travel? Learning Points The vibrations of vocal cords produce sound waves. On Earth sound is transmitted through air molecules. The vacuum of space does...
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How do sounds travel?
Find out that sound waves always need a medium to travel through. Physical processes - Sound - How does sound travel? Learning Points Sound waves are known as compression waves. Sound waves travel at different speeds depending on the...
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Changing state
Materials change state all the time, but how and why? Material processes - Solids, liquids and gases - Changes of state Learning Points Melting is the change of state from solid to liquid. Evaporation is the change of state from liquid...
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Heat transfer
Investigate the ways in which heat can be transferred. Physical processes - Energy and energy transfer - Heat transfer Learning Points Conduction is the transfer of energy from one molecule to the next. Convection is the transfer of heat...
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VSEPR Theory: Learn Molecular Geometry Fast - Chemistry Study Guide
Struggling with VSEPR theory and molecular geometry? This video simplifies the concepts you need to master these essential chemistry topics. Learn how to draw Lewis structures with the correct geometry, understand bond angles, and...
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3 Intermolecular Forces You Must Know to PASS Chemistry
Understanding Intermolecular Forces (IMFs) is essential to success in chemistry and being able to discuss various properties we see in different molecules. In this video we cover the big three IMFs - hydrogen bonding, dipole dipole...
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EASILY know if a Molecule is POLAR or NONPOLAR in Chemistry
Being able to determine if a molecule is polar or nonpolar is very important in chemistry as it allows you to then discuss intermolecular forces present in molecules which helps to predict various physical and chemical properties. In...
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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
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Matter and its Construction: Molecule
By the end of this learning object, the student will be able to: Describe the properties of molecules.17353
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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
Wonderscape
Einstein's Miracle Year: Groundbreaking Discoveries of 1905
This video delves into Albert Einstein's "miracle year" of 1905, when he published revolutionary papers that changed our understanding of light, atoms, and the universe. Learn about his theories on photons and quantum theory, his proof...
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Why Does Water Evaporate at Room Temperature?
Water evaporates at room temperature because the molecules at the top of the liquid have less intermolecular attraction than those within the bulk. When the top layer is exposed to sunlight, some molecules gain enough kinetic energy to...
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I WONDER - What Shape Is A Molecule?
Jump into 'What Shape Is A Molecule?' to explore the tiny, invisible building blocks of everything around us! A quick, fascinating peek into chemistry, perfect for curious young minds.