All Experiment articles – Page 3
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Experiment
The determination of copper in brass
Try this microscale class practical to investigate how much copper there is in brass using nitric acid. Includes kit list and safety instructions.
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Experiment
Microscale reactions of hydrogen sulfide
Observe the reactions of hydrogen sulfide with lead nitrate, silver nitrate and potassium manganate(VII) in this microscale practical. Includes kit list and safety instructions.
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Experiment
Microscale reactions of ammonia
Try this practical to explore the reactions of ammonia with indicator solution, copper(II) sulfate solution and Nessler’s reagent. Includes kit list and safety instructions.
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Experiment
Testing acids and bases on a microscale
Test various substances with indicator solution and look for colour changes in this microscale class practical. Includes kit list and safety instructions.
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Experiment
Mass changes in chemical reactions
Perform two chemical reactions to see whether any mass changes occur in this microscale class practical. Includes kit list and safety instructions.
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Experiment
Brady’s test for aldehydes and ketones
Identify aldehydes and ketones using Brady’s reagent (2,4-dinitrophenylhydrazine) in this microscale experiment. Includes kit list and safety instructions.
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Experiment
Preparing and testing ethyne (acetylene)
Generate ethyne gas with calcium carbide and test its properties in this microscale class practical. Includes kit list and safety instructions.
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Experiment
Observing chemical changes
Try this microscale practical to explore the chemical changes in displacement, redox and precipitation reactions. Includes kit list and safety instructions.
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Experiment
Diffusion of gases on a microscale
Try this class practical to explore the diffusion of gases and how relative molecular mass affects rate of diffusion. Includes kit list and safety instructions.
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Experiment
Oxidation states of iron
Compare the two main oxidation states of iron and consider explanations for differences in this microscale practical. Includes kit list and safety instructions.
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Experiment
Microscale reactions of metals with acids
Try this class practical to explore reactivity series with various metals as they react with acids on a microscale. Includes kit list and safety instructions.
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Experiment
Unsaturation test with potassium manganate(VII)
Use a solution of potassium manganate to test for unsaturation in organic compounds in this microscale practical. Includes kit list and safety instructions.
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Experiment
Testing for unsaturation with bromine on a microscale
Try this class experiment to prepare elemental bromine and use it to test for unsaturation in organic compounds. Includes kit list and safety instructions.
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Experiment
Synthesis of aspirin on a microscale
Use this class practical to produce aspirin in a microscale esterification reaction using phosphoric acid as a catalyst. Includes kit list and safety instructions.
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Experiment
Investigating redox reactions on a microscale
Carry out two redox reactions and observe and interpret the results in this microscale class practical. Includes kit list and safety instructions.
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Experiment
Sulfate and carbonate solubility of Groups 1 and 2
Try this microscale practical to explore the properties of elements in Groups 1 and 2 as they form various precipitates. Includes kit list and safety instructions.
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Experiment
Displacement reactions of metals on a microscale
Examine the reactions between various metals and metal salt solutions in this microscale class practical. Includes kit list and safety instructions.
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Experiment
Electrolysis using a microscale Hoffman apparatus
Investigate the electrolysis of sodium sulfate solution using a microscale Hoffman apparatus in this class practical. Includes kit list and safety instructions.
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Experiment
Analysis of aspirin tablets on a microscale
Try this microscale class practical to analyse aspirin tablets and find out how much salicylic acid is present. Includes kit list and safety instructions.
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Experiment
Turning copper coins into ‘silver’ and ‘gold’
Perform what looks like alchemy with ordinary copper coins in this teacher demonstration. Includes kit list and safety instructions.