All Class experiment articles – Page 12
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Class experimentSupercooling and the energetics of freezing
Explore what happens when a liquid is supercooled using sodium thiosulfate in this class practical. Includes kit list and safety instructions.
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Class experimentPreventing rust
Try this practical to test methods for preventing rust on iron nails, including painting, greasing and sacrificial protection. Includes kit list and safety instructions.
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Class experimentPreferential discharge of cations during electrolysis
Use this practical to show that metal cations are preferentially discharged, in relation to the metal’s position in the reactivity series. Includes kit list and safety instructions.
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Class experimentEmulsifiers in the kitchen
Test a range of common ingredients to see which ones stabilise an oil and water emulsion in this class practical. Includes kit list and safety instructions.
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Class experimentThe properties of alcohols
Ethanol and propan-1-ol are tested for pH, reaction with sodium, combustion and oxidation with acidified dichromate(VI) solution. Includes kit list and safety instructions.
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Class experimentMaking glue from milk
Try this class practical to prepare a polymer glue from milk using the protein casein. Includes kit list and safety instructions.
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Class experimentPreparing and using cobalt chloride indicator papers
Make your own cobalt chloride indicator papers, which can be used to test for the presence of water. Includes kit list and safety instructions.
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Class experimentThe migration of ions during electrolysis of potassium manganate(VII)
Try this class practical to investigate the migration of ions during electrolysis as evidence for the ionic model. Includes kit list and safety instructions.
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Class experimentReactions of chlorine with water or halide ions
Generate chlorine gas on a microscale and investigate its reactions with water or halide ions in this class practical. Includes kit list and safety instructions.
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Class experimentChromatography of sweets | 11–14 years
Try this class practical to carry out chromatography using dye from different coloured M&M’s®. Includes kit list and safety instructions.
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Class experimentHydrogels in plant water storage crystals
Investigate plant water storage crystals as one application of hydrogels in this fun class practical. Includes kit list and safety instructions.
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Class experimentInvestigating hydrogels in nappies and hair gel
Investigate hydrogels as polymeric smart materials in this series of activities using nappies and hair gel. Includes kit list and safety instructions.
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Class experimentThe reactivity of iron
Illustrate iron’s position in the reactivity series by heating it with copper and magnesium oxides in this practical. Includes kit list and safety instructions.
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Class experimentExothermic metal–acid reactions
Use this class practical to explore the temperature changes resulting from adding different metals to hydrochloric acid. Includes kit list and safety instructions.
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Class experimentComparing heat energy from burning alcohols
Investigate the amounts of heat energy produced by the combustion of different alcohols in this class experiment. Includes kit list and safety instructions.
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Class experimentPreparing salts by neutralisation of oxides and carbonates
Try these class experiments to illustrate the production of soluble salts from insoluble metal oxides and carbonates. Includes kit list and safety instructions.
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Class experimentA red–blue oscillating reaction
Use this practical or demonstration to provide a visual illustration of an oscillating reaction and redox equilibria. Includes kit list and safety instructions.
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Class experimentFinding the formula of hydrated copper(II) sulfate
In this experiment students will measure the mass of hydrated copper(II) sulfate before and after heating and use mole calculations to find the formula.
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Class experimentMaking glass
Try this class practical to make samples of glass using lead oxide, zinc oxide and boric acid. Includes kit list and safety instructions.
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Class experimentDetermining the relative atomic mass of magnesium
Use this practical to determine the relative atomic mass of magnesium using its reaction with hydrochloric acid. Includes kit list and safety instructions.