Listing all results (123)

An Oscillating Reaction

In this classic demonstration, from the Royal Society of Chemistry, manganese (II) ions catalyse the reaction between bromate ions and malonic acid. The reaction oscillates between red-brown and colourless.

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

The Equilibrium Between ICl and ICl3

In this classic demonstration, from the Royal Society of Chemistry, an equilibrium is set up between iodine chloride, chlorine and iodine trichloride. The amount of chlorine can be varied and the effect on equilibrium observed.

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

Determining Relative Molecular Masses of Gases

In this classic demonstration, from the Royal Society of Chemistry, lighter gas is collected in an upturned measuring cylinder and the mass measured. Using the ideal gas equation, the relative molecular mass of the gas is determined.

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

The Equilibrium Between Co(H2O)6 2+ and CoCl4 2–

In this classic demonstration, from the Royal Society of Chemistry, the equilibrium between the cobalt hexaaqua ion and cobalt chloride can be disrupted by adding chloride ions and by changing the temperature. The reaction mixture changes from blue to pink.

The resource provides a list of apparatus and...

Phenolphthalein as an Indicator

In this classic demonstration, from the Royal Society of Chemistry, phenolphthalein is turned pink and colourless in alkali and acidic conditions, and then colourless in strongly alkaline conditions.

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

Strong and Weak Acids: the Common Ion Effect

In this classic demonstration, from the Royal Society of Chemistry, three different strength acids are reacted with calcium carbonate, the gas produced is captured using washing up liquid. The height and speed of the foam produced are measured as well as the pH throughout the demonstration.

The resource...

The Optical Activity of Sucrose

In this classic demonstration, from the Royal Society of Chemistry, using sugar solution and polaroid sunglasses, students are able to observe the optical activity of sucrose.

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

Curriculum...

Urea-methanal Polymerisation

In this classic demonstration, from the Royal Society of Chemistry, a hard thermosetting polymer is produced by adding acid to a solution of urea in formalin. This reaction is very exothermic.

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

Dalton's Law of Partial Pressures

In this classic demonstration, from the Royal Society of Chemistry, the pressure exerted by molecules of methane, hydrogen and oxygen are measured separately and as a mixture. They are shown to obey Dalton’s law.

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

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...

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