Find out how chromatography can be used to create the chemical 'colour fingerprint' of a substance. What are the two chromatography methods and how are they used to solve crimes? Chemistry - Atoms And Bonding - Learning Points....

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...

What exactly are alloys? What is it about their properties that make them so useful for a huge variety of purposes, from construction to jewellery? Chemistry - Periodic Table - Learning Points. Alloys are metals mixed with other...

Learn how the industrial process of fractional distillation transforms crude oil into a variety of products, from plane fuel to road surfacing. Chemistry - Chemical Industries - Learning Points. Extraction of crude oil from Fractional...

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 compare the properties of three iron mixtures: iron and water, iron and oil and a ferrofluid - a mixture of compounds containing iron and oil. First, we look at how iron filings behave when mixed with water and then oil. We then hold...

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...

We make slime using borax, water and food colouring. The slime is a non-Newtonian liquid. A non-Newtonian liquid can behave like a liquid or a solid depending on the pressure applied to it. Chemistry - Atoms And Bonding - Learning...

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 look at how chemical filtration can be used to remove contaminants from water. Potassium permanganate is used as the contaminant. First, we try to remove it using physical filtration, with filter paper and a funnel. This does not...

We investigate the properties of two types of gas bubbles: methane gas bubbles and bubbles of the gas we breathe out. The air-filled bubbles sink and we are unable to set them alight, while the methane bubbles float upwards and are...

We discover how to extract lead from lead(II) oxide. We mix lead(II) oxide with charcoal powder and then heat the mixture using a Bunsen burner. It glows bright red as a reaction occurs and after a few minutes we are left with pure lead....

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...

Explore the difficulties of extracting aluminium from its ore, and how the vast quantities of heat and electricity generated by electrolysis allow this to happen. Chemistry - ReactionsLearning Points. Aluminium is difficult to extract...

Salt is found in the oceans and Earth's surface. How do we collect this salt and separate it from the materials it is mixed with? Chemistry - Atoms And Bonding - Learning Points. Salt is found in oceans, lakes and underground rock beds....

What is it? ... It's a fruit salad!
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Material processes - Separating mixtures - What


is a mixture?


A Twig Tidbit Film - Jigsaw. An image is slowly revealed as pieces of the jigsaw are removed. The...

What's that noise? ... It's a blender!
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Material processes - Separating mixtures - What


is a mixture?


A Twig Tidbit Film - What’s that noise? The children have
to identify an object from its
...

Find out what makes a mixture, and what happens when materials react chemically.
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Material processes - Separating mixtures - What


is a mixture? />

Learning Points
A mixture is formed when...

You may not think about it much, but air is everywhere and it is essential to life.
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Material processes - Solids, liquids and gases - Characte
r

istics of air />

Learning Points
Air is a...

Explore the substances that make up blood and why it is classed as a mixture.
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Material processes - Separating mixtures - What


is a mixture? />

Learning Points
Mixtures do not react...

Find out how harmful gases in the air can react together to create smog ... a form of air pollution.
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People and places - Human impact on the environment - Pol
l

uting the air />

Learning Points...

Find out how advanced separation processes are used to separate substances in complex mixtures.
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Material processes - Separating mixtures - Other means


of separation />

Learning Points
...

Find out how hot air balloons work.
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Material processes - Solids, liquids and


gases - Gases />

Learning Points



Air is made up of different gases.

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The molecules in gas...

Learn how to find out the difference between tap water and spring water.
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Material processes - Separating mixtures - Separation
b

y evaporation />

Learning Points
Evaporation c
a

n be used to...