Listing all results (214)

Thermal Properties of Water

In this classic demonstration, from the Royal Society of Chemistry, water is boiled in a paper cup without burning the cup and a balloon containing water will not burst when a flame is held to it.

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

The Density of Ice

In this classic demonstration, from the Royal Society of Chemistry, an ice cube is shown to float on cooking oil. However when the ice is melted, the water sinks.

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

Curriculum links include...

The Tubeless Siphon

In this classic demonstration, from the Royal Society of Chemistry, a viscous liquid of polyethylene oxide in propan-2-ol (isopropanol) is poured into a second beaker. On returning the first beaker to the upright position, the liquid continues to siphon by climbing up the side of the beaker and over the rim.

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Movement of Ions During Electrolysis

In this classic demonstration, from the Royal Society of Chemistry, a petri dish which contains sodium sulphate solution and bromocresol purple indicator undergoes electrolysis. The movement of the blue colour away from the cathode shows the movement of the hydroxide ions.

The resource provides a list of...

Endothermic Solid-solid Reactions

In this classic demonstration, from the Royal Society of Chemistry, barium hydroxide and solid ammonium chloride are mixed in a beaker. There is a considerable drop in temperature and a strong smell from the ammonia produced.

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

A Solid-solid Reaction

In this classic demonstration, from the Royal Society of Chemistry, the solids of lead nitrate and potassium iodide are shaken together and yellow lead iodide is formed.

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

Curriculum links...

‘Magic’ Writing

In this classic demonstration, from the Royal Society of Chemistry, messages are written on filter paper using colourless dilute solutions, including those of several transition metals. When the filter papers are sprayed with other solutions, the messages appear in a variety of colours.

The resource...

The Photochemical Reactions of Chlorine with Hydrogen and with Methane

In this classic demonstration, from the Royal Society of Chemistry, shining a strong light onto a cored bottle of chlorine and hydrogen causes a rapid photochemical reaction and the bottle explodes. A less rapid reaction occurs with methane and chlorine.

The resource provides a list of apparatus and...

Dyeing – Three Colours from the Same Dye-bath

In this classic demonstration, from the Royal Society of Chemistry, three different materials such as wool, silk and nylon are placed in a dye bath containing blue, red and yellow dye. The materials emerge different colours due to the interactions of the materials and the dyes.

The resource provides a list...

The Reaction of Sodium with Chlorine

In this classic demonstration, from the Royal Society of Chemistry, sodium is placed in a gas jar of chlorine. The reaction is initiated by adding a small drop of water to the sodium. A vigorous exothermic reaction follows, producing white sodium chloride.

The resource provides a list of apparatus and...

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