Listing all results (132)

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.

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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...

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...

The Reaction Between Potassium Permanganate and Glycerol

In this classic demonstration, from the Royal Society of Chemistry, glycerol is poured on potassium permanganate, the reaction is strongly exothermic and a pink flame is given off.

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

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The Non-burning £5 Note

In this classic demonstration, from the Royal Society of Chemistry, a piece of paper is soaked in ethanol and water, the ethanol burns but the water prevents the paper burning. To make this demonstration very exciting, a £5 note can be used.

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

Disappearing Plastic

In this classic demonstration, from the Royal Society of Chemistry, propanone will dissolve polystyrene packing material, during the process the packing material shrinks and fizzes.

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

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A Giant Silver Mirror

In this classic demonstration, from the Royal Society of Chemistry, silver nitrate in the presence of ammonia is reduced by glucose to silver. The silver forms a mirrored surface on the inside of a large round bottomed flask.

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

Flame Colours

In this classic demonstration, from the Royal Society of Chemistry, solutions of metal salts in ethanol are sprayed into a Bunsen burner flame. Students can identify the metal ion dissolved in the ethanol.

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

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