Listing all results (123)

The Reaction of Ethyne with Chlorine

In this classic demonstration, from the Royal Society of Chemistry, ethyne and chlorine react vigorously together to produce black soot. The ethyne is produced by reacting calcium carbide with sulphuric acid and the chlorine is produced by adding bleach to the acid.

The resource provides a list of apparatus...

Making Nylon – the ‘Nylon Rope Trick’

In this classic demonstration, from the Royal Society of Chemistry, a solution of decanedioyl dichloride is floated on a solution of diaminohexane. At the interface of the two liquids, the condensation polymer nylon forms and it can be carefully removed as a long rope.

The resource provides a list of...

The ‘Breathalyser’ Reaction

In this classic demonstration, from the Royal Society of Chemistry, air saturated with ethanol vapour is sucked over acidified potassium dichromate crystals which change from brown to green.

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

The Preparation of Nitrogen Monoxide and its Reaction with Oxygen

In this classic demonstration, from the Royal Society of Chemistry, nitrogen monoxide is prepared by reacting iron (II) sulphate with sodium nitrate in acidic solution, reacting the nitrogen monoxide produced with oxygen produces brown nitrogen dioxide. This experiment can be carried out using equal volumes of...

Reactions of the Alkali Metals

In this classic demonstration, from the Royal Society of Chemistry, the reactions of lithium, sodium and potassium are demonstrated by reacting with water and chlorine. The physical properties of these metals are also demonstrated.

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

The Preparation and Properties of Nitrogen(I) Oxide

In this classic demonstration, from the Royal Society of Chemistry, nitrogen (I) oxide is prepared by reacting sodium nitrate and ammonium sulphate. The nitrogen oxide is shown to re-light a glowing splint and be partially soluble in water; heating the gas with copper leaves nitrogen gas.

The resource...

The Equilibrium Between Nitrogen Dioxide and Dinitrogen Tetroxide

In this classic demonstration, from the Royal Society of Chemistry, an equilibrium mixture of brown nitrogen dioxide and colourless dinitrogen tetroxide is put into a gas syringe, the position of equilibrium can be determined by the colour. The effect of temperature and pressure on an equilibrium is investigated...

Zinc-plating Copper and the Formation of Brass –'Turning Copper into ‘Silver’ and ‘Gold’'

In this classic demonstration, from the Royal Society of Chemistry, a copper coin is plated with zinc using a solution of sodium zincate in the presence of zinc, the coin will appear silver. When the coin is heated, the zinc and copper form an alloy of brass and so the coin appears gold.

The resource...

The Electrolysis of Molten Lead Bromide

This classic demonstration, from the Royal Society of Chemistry, shows that lead bromide does not conduct when solid but does when molten. The products of bromine and lead can be collected and weighed. A value for the Faraday constant can be estimated.

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

The Liquefaction of Chlorine

In this classic demonstration, from the Royal Society of Chemistry, a stream of chlorine is directed at a cold finger condenser containing dry ice and ethanol. The chlorine condenses as yellow droplets.

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

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