All Experiment articles – Page 3

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Experiment

Turning copper coins into ‘silver’ and ‘gold’

In association with Nuffield Foundation

Perform what looks like alchemy with ordinary copper coins in this teacher demonstration. Includes kit list and safety instructions.