Listing all results (214)

Unsaturated Compounds in Foods

In this classic demonstration, from the Royal Society of Chemistry, different samples of food are placed in a gas jar containing bromine gas. The colour of the bromine gas fades, demonstrating that the food contains a carbon-carbon double bond.

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

Making Silicon and Silanes from Sand

In this classic demonstration, from the Royal Society of Chemistry, magnesium and sand are heated together producing silicon in a very exothermic reaction. Acid is used to remove unreacted magnesium and magnesium oxide.

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

Red, White and Blue

In this classic demonstration, from the Royal Society of Chemistry, a solution of ammonia is poured into three beakers containing, phenolphthalein, lead nitrate and copper sulphate. The solutions become red, milky white and deep blue but pouring them into acid reverses the reaction.

The resource provides a...

The Reduction of Copper Oxide

In this classic demonstration, from the Royal Society of Chemistry, copper oxide is reduced using natural gas to produce copper. It is possible to speed up the reaction by bubbling the gas through ethanol.

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

The Ammonium Dichromate ‘Volcano’

In this classic demonstration, from the Royal Society of Chemistry, a conical pile of orange ammonium dichromate is ignited. This produces a large volume of green chromium (III) oxide and steam.

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

Sulphuric Acid as a Dehydrating Agent

In this classic demonstration, from the Royal Society of Chemistry, concentrated sulphuric acid is added to a beaker of glucose, the sulphuric acid dehydrates the glucose leaving a pillar of carbon rising from the beaker.

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

The Density of Carbon Dioxide

In this classic demonstration, from the Royal Society of Chemistry, carbon dioxide is poured onto a candle flame in a beaker and the flame is extinguished. The candle will not relight until the carbon dioxide is poured out of the beaker.

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

The Enthalpy and Entropy Changes on the Vaporisation of Water

In this classic demonstration, from the Royal Society of Chemistry, a kettle of known power is kept boiling for two minutes, the change in mass of the water can be used to calculate the enthalpy and entropy changes.

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

Catalysts for the Decomposition of Hydrogen Peroxide

In this classic demonstration, from the Royal Society of Chemistry, the catalysing power of different catalysts is measured by adding them to washing up liquid and measuring the rate of foam production when hydrogen peroxide is added. Chemical and natural catalysts are used in this demonstration.

The...

Estimating the Concentration of Domestic Bleach

In this classic demonstration, from the Royal Society of Chemistry, an excess of hydrogen peroxide is added to household bleach and the volume of oxygen evolved is measured. Using the ideal gas equation the concentration of sodium chlorate in the bleach can be determined.

The resource provides a list of...

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