All Reactions and synthesis articles – Page 5
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ResourceAnecdotes: In the Limelight
The background and chemistry of burning calcium with hydrogen and oxygen to make ‘limelight’.
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SoundbiteA state secret leak is helping to solve the Skripal poisoning
The role of scientist whistle-blowers from Russia
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ExperimentProducing a foam
Explore foams and their properties in this experiment, so students learn how foam is produced and produce their own. Includes kit list and safety instructions.
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ExperimentReacting elements with oxygen
Different members of the periodic table will exhibit different reactions when exposed to oxygen, often through heating. This practical supports students to understand the diversity of chemicals and their principles.
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ExperimentThe reaction of magnesium with steam
Plunge a burning magnesium ribbon into the steam above boiling water and allow the hydrogen that is formed to burn – or collect it over water and test it with a lighted spill.
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ResourceThe reaction between zinc powder and sulfur
A spectacular practical demonstration to show the differences between elements, mixtures and compounds
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ExperimentBurning milk powder
Gather a Bunsen burner, and some common powdered milk to help students grasp the ideas of surface area and reaction rates. Includes kit list and safety instructions.
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ExperimentHydrogen peroxide decomposition using different catalysts
Collect a range of catalysts to explore the decomposition of hydrogen peroxide, paying close attention to the varied reaction rates. Includes kit list and safety instructions.
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ExperimentCompetition for oxygen
Explore the reactions of metals when exposed to the oxide of another metal. When reactions like these occur, the two metals compete for the oxygen. Includes kit list and safety instructions.
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ExperimentMaking nylon: the ‘nylon rope trick’
The ‘nylon rope trick’ is a classic of chemistry classrooms, by mixing decanedioyl dichloride and in cyclohexane you can create a solution that will form nylon strings when floated on an aqueous solution of 1,6-diaminohexane. Kit list and safety instructions included.
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ExperimentThe methane rocket
Ignite methane with oxygen in a bottle, and amaze students with this methane rocket. Contains kit list and safety instructions.
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ExperimentThe effect of concentration on reaction rate
Students react sodium thiosulfate solution is reacted with acid – a sulfur precipitate forms. The time taken for a certain amount of sulfur to form can be used to indicate the rate of the reaction. Contains kit list and safety instructions.
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ExperimentMaking silicon and silanes from sand
Create silicon in your classroom using just sand and magnesium. This exothermic practical will show learners the nuances of heat based reactions and how to perform them safely. Kit list and safety instructions included.
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ExperimentTesting for negative ions
Guide students into testing for negative ions with this practical. Students note their own observations and use their knowledge to discover more. Includes kit list and safety instructions.
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ResourceChallenging Plants: Fertilisers - Practicals
Nutrients essential for plant growth are obtained naturally from soil or other growing media. However, supplies become depleted and fertilisers are needed to increase the availability of nutrients to plants. An understanding of chemical changes is used to making fertilisers, often designed to meet specific requirements such as particular nutrient ...