All Quantitative chemistry and stoichiometry articles

Resource

Interpreting chemical equations for ionic compounds | Developing understanding | 14–16

Help your learners develop mental models of what is represented in balanced chemical equation for ionic compounds with this resource, including teacher notes and a student worksheet 

Class experiment

Determining the relative atomic mass of magnesium

In association with Nuffield Foundation

Use this practical to determine the relative atomic mass of magnesium using its reaction with hydrochloric acid

Class experiment

Finding the formula of copper(II) oxide

In association with Nuffield Foundation

Use this demonstration with your 14–16 learners to deduce the formula of copper(II) oxide by reducing it with methane

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Moles and volume | Developing understanding | 14–16 years

Deepen your learners’ understanding of the idea that equal volumes of gases contain an equal number of molecules with this worksheet

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Introducing chemical change | Key terms support | 11–14

Language support pack for Introducing chemical change, with key terms list, accessible glossary, Frayer models and unscrambling definitions

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Moles and mass | Developing understanding | 14–16 years

Develop understanding of the relationship between the mass of one mole, the number of moles and the mass of a substance

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Quantitative chemistry | Key terms support | 14–16

Language support pack for quantitative chemistry, with key terms list, accessible glossary, Frayer models and unscrambling definitions

Resource

Reactant and product substances | Developing understanding | 11–14

Use these worksheets to secure and deepen your learners’ understanding of reactants and products in chemical changes

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Iron and sulfur reaction | Johnstone’s triangle | 11–14

Develop your learners’ understanding of reactants and products at different conceptual levels, using an iron and sulfur reaction as an example

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C, O and Co | Johnstone’s triangle | 11–14 years

Develop your learners’ understanding of symbols and formulas at different conceptual levels by comparing the symbolic representations of carbon monoxide and cobalt

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Relative mass | Structure strip | 14–16 years

Support learners to demonstrate their understanding of relative mass, using scaffolded writing prompts

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Reacting masses and gas volumes | Structure strip | 14–16 years

Use scaffolded prompts to support learners to write about reacting masses and gas volumes

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Interpreting chemical equations | Developing understanding | 14–16 years

Deepen learners’ understanding of interpreting chemical equations by exploring the topic at different conceptual levels

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Balancing chemical equations using hydrogen and oxygen | Johnstone’s triangle worksheets | 14–16 years

Introduce Johnstone’s triangle to help learners gain a deeper understanding of balancing chemical equations

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Relative atomic mass of boron | Johnstone’s triangle worksheets | 14–16 years

Use Johnstone’s triangle to help learners think about the relative atomic mass of boron 

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Concentration and mass | Developing understanding | 14–16 years

Encourage learners to deepen their understanding of concentration and mass from the macroscopic to sub-microscopic level

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Concentration of sodium hydroxide | Johnstone’s triangle worksheets | 14–16 years

Think about sodium hydroxide (NaOH) solution at a macroscopic, sub-microscopic and symbolic level

Class experiment

A microscale acid–base titration

In association with Nuffield Foundation

Use microscale titration to complete an acid–base neutralisation with sodium hydroxide in this class practical. Includes kit list and safety instructions.

Exhibition chemistry

Explore the nitrogen oxides: Avogadro’s law revisited

2025-11-03T06:00:00Z

 Use colourless nitrogen monoxide and oxygen gases to produce coloured nitrogen dioxide gas

Misconceptions

Mass and dissolving | Chemical misconceptions II | 11–14 years

Use these questions to explore dissolving solids in liquids and tackle common misconceptions