All Reactions and synthesis articles – Page 3

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.
Resource
The 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
Resource
Chromium, molybdenum and tungsten

Demonstrate aspects of colour, precipitate formation, changes in oxidation state and equilibria for transition elements
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.
Resource
The chemical properties of hydroxybenzene

Observe and interpret some of the chemical reactions of hydroxybenzene (phenol) inside a plastic petri dish
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.
Resource
Redox chemistry with dichromate ions

Observe the colour changes that occur with the reduction of dichromate ions by hydrogen peroxide
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.
Resource
Oxygen and methylene blue

Test for oxygen gas produced from the reaction between hydrogen peroxide and potassium manganate (VII) using methylene blue solution
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.
Resource
Energy changes in neutralisation

Study energy changes in two chemical reactions by performing the experiment on temperature strips
Resource
Formation of TCP (2,4,6-trichlorohydroxybenzene)

Prepare a distinctive-smelling sample of TCP by reacting hydroxybenzene (phenol) with chlorine gas
Resource
Some reactions of carbon dioxide

Create carbon dioxide from marble chips and acid, then test for its reaction with barium hydroxide by observing the carbonate precipitate
Resource
The microscale synthesis of azo dyes

Create fabric dye by synthesising an azo dye and using it to change the colour of a piece of cotton
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.
Resource
Aspirin screen experiment

Get students aged 16–18 running their own organic synthesis on a computer or tablet before taking part in the real thing. This resource also features an in-depth practical guide and a set of worksheets covering the theory.
Resource
Qualitative analysis quizzes

In association with The Wolfson Foundation

Find out more about our quizzes and watch the associated videos. The quizzes consist of 10 questions in each section and focus on providing formative feedback to students. The range of question types includes text response, numerical response, drag and drop and multiple choice. These quizzes are available free to ...