Listing all results (214)

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...

Identifying the Products of Combustion

In this classic demonstration, from the Royal Society of Chemistry, a filter pump is used to draw the gases produced by a burning candle over cobalt chloride paper and through limewater.

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

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The Spontaneous Combustion of Iron

In this classic demonstration, from the Royal Society of Chemistry, iron (II) ethanedioate is heated to decompose it producing carbon dioxide, carbon monoxide and finely divided iron (II) oxide and iron. The iron products are rapidly oxidised on exposure to air to give iron (III) oxide, the reaction is exothermic...

The Thermal Decomposition of Nitrates – ‘Magic Writing’

In this classic demonstration, from the Royal Society of Chemistry, a saturated solution of sodium nitrate is applied to a filter paper, once the solution has dried it is ignited with a glowing splint. Where the paper has been treated with the solution the paper glows and smoulders away leaving the hidden message...

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...

Diffusion of Gases – Ammonia and Hydrogen Chloride

In this classic demonstration, from the Royal Society of Chemistry, cotton wool soaked in ammonia and hydrochloric acid are placed at either end of a sealed tube. The two gasses diffuse through the tube and when they meet a reaction takes place forming a white solid of ammonium chloride. The relative position of...

Water as the Product of Burning Hydrogen

In this classic demonstration, from the Royal Society of Chemistry, hydrogen is burnt close to a cold condenser, the water produced condenses and can be shown as a product.

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

Curriculum...

The Greenhouse Effect – 1

In this classic demonstration, from the Royal Society of Chemistry, thermometers are clamped near a photoflood bulb. One is clamped in air, one in a plastic drinks bottle and the third is clamped in a drinks bottle painted with matt black paint. The steady state temperature of the thermometers is measured.

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The Greenhouse Effect – 2

In this classic demonstration, from the Royal Society of Chemistry, two beakers which contain a thermometer and a lead foil disc are placed below a photoflood bulb. Once the temperature has stabilised, one beaker is flooded with carbon dioxide.

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

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....

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