This video is answering the question of what is a chemical reaction.

While it is true that a crystal of mercury fulminate would explode when slammed to the floor, the crystal depicted in the show Breaking Bad did not accurately represent the appearance of mercury fulminate. Commercial-grade mercury...

The emotion a spider elicits is not just fear but a combination of fear, disgust, and creepiness. Psychologists reckon that we have evolved to feel disgust or revulsion to prevent us from consuming or contacting things that might be a...

This video covers:

0:21 - What a molecu
le is
1:11 - What a c
ompound is
3:11 - How to use brackets in a c
hemical formula
4:48

- What a mixture is
r/>This vid
eo is suitable for
:
- All tiers
- All exam...

This video covers:<br/>
- What surface area to volume r<br/>atio means
- How to calculate s<br/>urface area and volume
- Why large organisms need specialised exchange surfaces and transport systems

This video covers:<br/>
- What exchange s<br/>urfaces are
- The key features<br/> of exchange surfaces
- Specific examples including alveoli, villi, root hair cells, and leaves

Risk factors are things that increase the chance that a person will develop a certain disease. Lots of these are lifestyle choices that we make everyday. Learn the links you need to know, and how disease can affect society at large.

Most drugs originate from nature e.g. from the back of a tree, but they have to refined and tested in clinical trials. Learn how this process works and the many stages we go through to ensure the final drug is effective.

Learn the roles of arteries, capillaries and veins and how they are adapted to those roles; as well how to calculated the rate of blood flow.

In this video we take a look at our bodies defences against pathogens. Including the physical and chemicals barriers, and our immune system.

This video covers: - Why do things rust? What are the conditions for rusting? - Whats the chemical equation for rusting? - Corrosion experiment - How to prevent rusting by using the barrier method or sacrificial method - What is...

Everything you need to know about polymers!<b<br/>r/>

Polymers are large molecules made up of lots of repeating units called monomers. This video covers: how to identify them, how to draw them, and their properties.

In this video, you'll learn:

- What the term 'purity'
means
- How we use physical and chemical tests to check
for purity
- The effect of purity on melting and
boiling points
- What the term
'formulation' means
-...

In this video you'll learn: - What chromatography is used for - The process for setting up and carrying out paper chromatography - What the mobile and stationary phases are

Dr. Forrester explains that materials in simple mixtures can be separated because they have different properties. She teaches that combining two or more substances can make new materials with different properties. She also identifies...

Dr. Forrester will focus on the nitrogen cycle. She will define and explain how the cycle works.

This video explores five fun facts about chemical reactions.

This video is answering the question of what is pollution.

This video explores five fun facts about polluion.

Separating Solids demonstrates that mixtures of solids can be separated based on their observable properties, including particle size, shape, color, and magnetic attraction.

In this video, the teacher explains how matter is constantly recycled in ecosystems. She shows examples of how matter moves from plants to animals, and from one organism to another through consumption. She also discusses the role of...

Homogeneous and Heterogeneous Mixtures explores characteristics of mixtures and solutions by explaining homogenous and heterogeneous mixtures.

Sublimation explores states of matter by explaining and providing examples of the process of sublimation.

Soluble or Insoluble classifies soluble and insoluble materials by conducting an experiment of adding various materials to warm water.