Listing all results (214)

Gas Bags

In this classic demonstration, from the Royal Society of Chemistry, a method for storing gases in bags for use in class activities and demonstrations is explained.

The resource provides a list of apparatus and chemicals needed for the experiment, together with teaching tips.

Curriculum links include...

The Hydrogen Peroxide/Potassium Iodide Clock Reaction

In this classic demonstration, from the Royal Society of Chemistry, a solution of hydrogen peroxide is mixed with one containing potassium iodide, starch, and sodium thiosulphate. The solution changes from colourless to dark blue, and halving the concentration will double the time.

The resource provides a...

Phenol/Methanal Polymerisation

In this classic demonstration, from the Royal Society of Chemistry, a pink thermosetting polymer is produced by adding sulphuric acid to an acidified solution of phenol in formalin. The product is a condensation polymer with many crosslinks.

The resource provides a list of apparatus and chemicals needed for...

The ‘Blue Bottle’ Experiment

In this classic demonstration, from the Royal Society of Chemistry, a colourless solution of potassium hydroxide, glucose, methylene blue, and ethanol is poured out into a sealed clear bottle. When shaken, air dissolves and the solution turns blue. Other indicators can be used to produce other colours.

...

The ‘Old Nassau’ Clock Reaction

In this classic demonstration, from the Royal Society of Chemistry, solutions of iodate (V) ions, hydrogen sulphite ions, mercury (II) ions and starch are mixed together. The solution turns orange and then black. The oxidation states of the reactants, products and intermediates can be determined.

The...

Gas Chromatography

In this classic demonstration, from the Royal Society of Chemistry, volatile hydrocarbons are injected into a mock up of a chromatography column filled with washing powder. Natural gas is used as the carrier and once through, the column is burnt. As a sample of hydrocarbon emerges from the column, the flame will...

Bubbles that Float and Sink

In this classic demonstration, from the Royal Society of Chemistry, dry ice is used to blow bubbles that are heavier than air and hydrogen is used to blow bubbles that are lighter than air and so float.

The resource provides a list of apparatus and chemicals needed for the experiment, together with teaching...

Liquid Nitrogen Demonstrations

This resource, from the Royal Society of Chemistry, describes five different demonstrations that can be done with liquid nitrogen.

The resource provides a list of apparatus and chemicals needed for the experiment, together with teaching tips.

Curriculum links include: distillation of air, physical...

Demonstrating the Colour Changes of Indicators Using Dry Ice

In this classic demonstration, from the Royal Society of Chemistry, dry ice is added to indicators, as the carbon dioxide sublimes and dissolves the pH drops and this is seen as the indicator changes colour. Universal indicator will show the gradual change.

The resource provides a list of apparatus and...

The Alcohol ‘Gun’

In this classic demonstration, from the Royal Society of Chemistry, a plastic bottle is filled with ethanol which is fitted with spark electrodes and sealed with a cork. When the electrodes are sparked with ethanol ignites and the cork will fire across the room.

The resource provides a list of apparatus and...

Pages

View all publishers