All Acids and bases articles – Page 7
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ResourceChemistry stinks - olfactory indicators experiment
Chemicals that change colour with pH are frequently used as indictors for acid-base titrations. The aim of this experiment it to determine the concentration of an unknown base using garlic powder as an olfactory indicator. Chemistry stinks – olfactory indicators experiment Class practical Chemicals that change colour with pH ...
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Class experimentThe acidic reactions of ethanoic acid
Explore the properties of ethanoic acid as a weak organic acid in this class experiment. Includes kit list and safety instructions.
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Class experimentReactions of metals with acids producing salts
Explore the production of hydrogen gas and salts when metals react with acids in this class experiment. Includes kit list and safety instructions
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Class experimentTitrating sodium hydroxide with hydrochloric acid
Use this class practical to explore titration, producing the salt sodium chloride with sodium hydroxide and hydrochloric acid. Includes kit list and safety instructions.
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OpinionFive ideas in chemical education that must die: pH 7 is neutral
Eric Scerri takes on the idea that pH 7 and neutral always coincide, and explains why it doesn't necessarily tell the whole story
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OpinionFive ideas in chemical education that must die
Eric Scerri explores outdated chemical concepts
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Class experimentTesting the pH of oxides
Use this class practical to investigate the pH of different metal and non-metal oxides using a universal indicator. Includes kit list and safety instructions.
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DemonstrationSulfuric acid as a dehydrating agent
Try these two demonstrations to illustrate the difference between dehydration and drying using sulfuric acid. 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 experimentReacting copper(II) oxide with sulfuric acid
Illustrate the reaction of an insoluble metal oxide with a dilute acid to produce crystals of a soluble salt in this class practical. Includes kit list and safety instructions.
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ResourceProblem based practical activities
Discover how chemistry can relate to real world problems, so students can put their science knowledge into context.
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ResourceUniversal indicators
This activity develops understanding of universal indicators and single indicators. The students build up their understanding by mixing two indicators. They also develop an awareness that the observed colour may be due to a mixture of colours.
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Class experimentA thermometric titration
Use this class practical to practise locating end-points in titration by measuring temperature during the reaction. Includes kit list and safety instructions.
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Class experimentA microscale acid–base titration
Use microscale titration to complete an acid–base neutralisation with sodium hydroxide in this class practical. Includes kit list and safety instructions.
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Class experimentNeutralising an acidic solution
Use this simple practical to illustrate the pH and temperature changes as an acidic solution is neutralised. Includes kit list and safety instructions.
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Class experimentComparing light- and heavy-duty detergents
Try this set of experiments to compare the effects of light- and heavy-duty detergents with different pH values. Includes kit list and safety instructions.
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Class experimentPreparing a soluble salt by neutralisation
In this practical, students react alkaline ammonia with sulfuric acid to form the soluble salt ammonium sulfate. Includes kit list and safety instructions.
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ResourceReAct podcasts
Experienced teachers talk about some of the trickiest topics in 16+ chemistry courses and how to overcome them.
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Class experimentTesting the pH of different solutions
Use this practical to reinforce students’ understanding of pH by preparing and testing acidic and alkaline solutions. Includes kit list and safety instructions.
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Exhibition chemistryMagic beakers
Declan Fleming shows you how to capture your students’ imaginations with spectacular demonstrations