All Quantitative chemistry and stoichiometry articles – Page 3
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Exhibition chemistryContaining the dichromate volcano
An updated and safer version of this classic, spectacular chemistry demonstration
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MathsSummation and the sigma notation
Paul Yates applies this handy shorthand to chemistry calculations in mass and enthalpy
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ResourceChemical misconceptions II: Mass and dissolving
This exercise is primarily aimed at the 11–14 age range, to discover more about dissolving solids in liquids.
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ResourceSustainable development and green chemistry
The Inspirational chemistry chapter ‘Sustainable development and green chemistry’. This chapter suggests games, activities, practicals and demonstrations that prompt students to think critically about how to make every day processes more environmentally friendly and sustainable.
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NewsWhy titrate?
A chemistry teacher wanted to know why professional chemists carry out titrations …
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ResourceConcentration simulation
Explore concentration with this interactive simulation. Add different solutes to water and adjust the controls to change their concentration:
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ResourceAmino acids and hair growth
Discover how quickly human hair grows, and develop learner’s understanding of amino acids too.
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ResourceH⁺ ions in water
Allow learners the chance to develop their own testing methods to identify H+ ions in samples of water.
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ExperimentDetermining relative molecular mass by weighing gases
Use this demonstration to determine the relative molecular masses of different gases using the ideal gas equation. Includes kit list and safety instructions.
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ExperimentDetermining the relative molecular mass of butane
Use this demonstration to calculate the relative molecular mass of butane using simple apparatus. Includes kit list and safety instructions.
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ExperimentThe effect of pressure and temperature on equilibrium | Le Chatelier’s principle
Try this demonstration to explore the effects of pressure and temperature on an equilibrium mixture with your students. Includes kit list and safety instructions.
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ExperimentThe effect of concentration and temperature on an equilibrium | Le Chatelier’s principle
Try this demonstration to illustrate how changing chlorine concentration or temperature shifts the position of an equilibrium. Includes kit list and safety instructions.
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ExperimentEstimating the concentration of bleach
Compare the chlorine content and concentration of sodium hypochlorite in different bleaches in this class practical. Includes kit list and safety instructions.
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ExperimentFinding the formula of copper(II) oxide
Use this class practical with your students to deduce the formula of copper(II) oxide from its reduction by methane. Includes kit list and safety instructions.
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ExperimentUnsaturation in fats and oils
Use this class practical to investigate the amounts of unsaturated fats and oils in different foods. Includes kit list and safety instructions.
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ExperimentThe composition and formula of water
Try this demonstration to determine the formula of water through the reaction of copper(II) oxide with hydrogen. Includes kit list and safety instructions.
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ExperimentComparing heat energy from burning alcohols
Investigate the amounts of heat energy produced by the combustion of different alcohols in this class experiment. Includes kit list and safety instructions.
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ExperimentFinding the formula of hydrated copper(II) sulfate
In this experiment students will measure the mass of hydrated copper(II) sulfate before and after heating and use mole calculations to find the formula.