All Quantitative chemistry and stoichiometry articles – Page 3
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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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Experiment
Unsaturation 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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Experiment
The 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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Experiment
Comparing 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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Experiment
Finding 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.
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Experiment
Determining the relative atomic mass of magnesium
Use this practical to determine the relative atomic mass of magnesium using its reaction with hydrochloric acid. Includes kit list and safety instructions.
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Experiment
The effect of concentration on equilibrium | Le Chatelier's principle
Illustrate the reversible reaction between bismuth(III) oxychloride and bismuth(III) chloride in this demonstration. Includes kit list and safety instructions.
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Resource
Problem based practical activities
A collection of 10 practical activities where students apply their understanding of a concept to devise a solution to a ‘real-life’ scenario.
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Experiment
The combustion of iron wool
Try this quick teacher demonstration to demonstrate the increase in mass as iron wool is heated in air. Includes kit list and safety instructions.
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Experiment
A 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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Experiment
A 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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Resource
Vintage titrations: tannin in wine
Determine the tannin concentration in the samples of wine and investigate the differences between red and white wine.
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Resource
Vintage titrations: sulfur dioxide concentrations in wine
Devise an analytical method to compare the amount of sulphur dioxide present in the samples of wine provided.
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Resource
Gas volume
Construct apparatus to measure the molar volume of hydrogen produced from the reaction of magnesium with vinegar.
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Resource
Franklin's teaspoon of oil
Find out what you can about the dimensions of a molecule of olive oil by making calculations using the information contained in the historical account of Franklin’s teaspoon of oil experiment
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Exhibition chemistry
Magic beakers
Declan Fleming shows you how to capture your students’ imaginations with spectacular demonstrations
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Resource
On This Day – Aug 08 : Henri Hess was born
He studied energy changes during chemical reactions, and postulated a method of predicting them – Hess’s Law. This is now routinely used by chemists to make predictions for enthalpy changes.
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CPD
Moles and titrations
Dorothy Warren describes some of the difficulties with teaching this topic and shows how you can help your students to master aspects of quantitative chemistry
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