All Class experiment articles – Page 4
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Class experimentTesting 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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Class experimentMass 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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Class experimentThe oxidation of cyclohexanol by nitric acid
Perform a ring opening oxidation using nitric acid to produce the dicarboxylic acid, 1,6-hexanedioic acid (adipic acid) – and then use the solid crystals that form to determine a melting point. Includes kit list and safety instructions.
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Class experimentExploring the chemistry of chromium, molybdenum and tungsten
Discover how transition elements differ in aspects of colour, precipitate formation, changes in oxidation state and equilibria. Includes kit list and safety instructions.
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Class experimentBrady’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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Class experimentThe chemical properties of phenol
Observe and interpret some of the chemical reactions of hydroxybenzene (phenol), by adding five different substances to a Petri dish, and noting down findings. Includes kit list and safety instructions.
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Class experimentPreparing ethyne on a microscale
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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Class experimentObserving 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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Class experimentDiffusion of gases and relative molecular mass
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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Class experimentRedox chemistry with dichromate ions
Observe the colour changes that occur with the reduction of dichromate ions by hydrogen peroxide. Includes kit list and safety instructions.
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Class experimentOxidation 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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Class experimentMicroscale 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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Class experimentUnsaturation 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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Class experimentProperties of group 2 elements
Microscale experiment where various anion solutions are added to drops of group 2 element cations. Includes kit list and safety instructions.
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Class experimentTesting 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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Class experimentOxygen and methylene blue
Reacting hydrogen peroxide, and potassium manganate together will produce detectable oxygen so by using methylene blue solution, and a gas generating apparatus students can test for the presence of oxygen in this practical. Includes kit list and safety instruction.
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Class experimentSynthesis 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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Class experimentEnergy changes in neutralisation
Study energy changes in two chemical reactions using thermometer strips to measure temperature in this experiment. Includes kit list and safety instructions.
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Class experimentFormation of TCP (2,4,6-trichlorohydroxybenzene)
Delve into preparing TCP by reacting hydroxybenzene (phenol) with chlorine gas, and create this distinctive smelling compound.
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Class experimentInvestigating 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.