There are many kinds of glue all around us. Some come from nature, and some we can create. Watch as Dr. Boyd gives step-by-step instructions on how to create your own glue at home. Minute 0:30 – Introduction Minute 0:42 – What you need...

Using a black marker, water and a coffee cup filter, Dr. Boyd explains and then demonstrates the analytical technique known as Paper Chromatography. Minute 0:30 – Introduction Minute 0:42 – What you need Minute 1:04 – Chromatography...

A type of cell division important to produce sex cells such as eggs and sperm.
<

br/>

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

A mixture of two or more substances which appears to be a single, uniform medium, with no visible separation between its components.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds...

The physical separation of a solid from a fluid carrier, either gas or liquid, by passing it through a medium that blocks particles above a certain size.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms...

A substance composed of more than one chemical element, whose atoms are held together by strong chemical bonds and are combined in a fixed ratio.
<

br/>

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

A mixture of two or more substances which remain as physically separate substances.
<

br/>

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

Thunderstorms can be an impressive sight, but how are they formed? What is happening deep inside certain clouds to create such huge bolts of energy? Earth Science - Weather - Learning Points. Thunderstorms form in dense tall clouds...

How are new species created? An insight into the key evolutionary processes, played out over many generations, which lead to speciation. Biology - Adaptation And Evolution - Learning Points. We all originate from a single cell, so why...

We use filtration and evaporation to separate out a mixture of water, sand and salt. The sand is removed using filtration, as it did not dissolve in the water. The remaining solution is heated until the water evaporates, leaving behind...

We separate the different pigments in a beech leaf using chromatography. The leaf is broken up and ground with sand and propanone before being transferred to some chromatography paper. This is then lowered into pigment solvent and we can...

We use distillation to remove the water from ink. The ink is heated in a conical flask with a delivery tube running to a beaker. The water has a lower boiling point and so it evaporates before the ink. The water condenses as it travels...

We use chromatography to see what colours make up the ink in different coloured felt tip pens. Different coloured dots are drawn on a piece of chromatography paper and this is lowered into a chromatography jar containing water. We watch...

A look at natural cloning and the main artificial cloning techniques devised by man, including embryo transplant and fusion cell cloning. Biology - Cells And DNA - Learning Points. Cloning occurs naturally in asexual reproduction in...

Paul Erdős is the most published mathematician ever. To such an extent that now everyone in the world has an assigned 'Erdős number', showing the degrees of separation between their work and his! Maths - History Of Maths A Twig Math...

What is it? ... It's chromatography!
<

br/>

Material processes - Separating mixtures - Other means


of separation


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

What is it? ... It's flour being sieved!
<

br/>

Material processes - Separating mixtures - Separat
i

on by sieving


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

True or false ... Wind can be used as a means of separation?
<

br/>

Material processes - Separating mixtures - Other means


of separation />

Learning Points
Wind can be used to separate hea
v

y grains...

Sieving is a process that separates solids of different sizes. Find out how sieves help archaeologists find tiny treasures.
<

br/>

Material processes - Separating mixtures - Separat
i

on by sieving />

...

Brussels sprouts are harvested and placed on a large mechanical sieve ... what happens next?
<

br/>

Material processes - Separating mixtures - Separat
i

on by sieving


A Twig Tidbit Film - What happens next?...

Six substances are shown on screen ... can you spot the water-soluble substances?
<

br/>

Material processes - Separating mixtures - Separation
b

y evaporation />

Learning Points
Seawater c
a

n be...

Discover how a process known as desalination is used to extract salt from seawater on a large scale.
<

br/>

Material processes - Separating mixtures - Separation
b

y evaporation />

Learning Points
...

Learn about fractional distillation and how it is used to separate crude oil.
<

br/>

Material processes - Separating mixtures - Other means


of separation />

Learning Points
Distillation...

In this video, you will learn to implement Python to develop item-based collaborative filtering using Pandas, NumPy, and Matplotlib.