Chemistry@BGS

Bourne Grammar School

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AQA GCSE Chemistry

Fundamental Ideas in Chemistry

Atoms, elements, compounds, formulae, equations and the foundations of chemistry.

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Notes

Teacher notes will go here later.

Top Tips

  • moles = mass / Mr or n = m / Mr
  • 1 cm3 = 0.001 dm3 or 1000 cm3 = 1 dm3
  • Always show all of your working, neatly and clearly labelled!

Additional Resources

📘 Specification
AQA GCSE Chemistry: Quantitative Chemistry
The official specification covering conservation of mass, relative formula mass, moles, reacting quantities, limiting reactants, concentration, yield, atom economy and gas volumes.
🧮 Calculation Guide
Chemguide: Chemistry Calculations
A free GCSE calculations hub covering relative masses, moles, reacting masses, gas volumes, solution concentrations, limiting reagents and atom economy.
⚖️ Moles
Chemguide: Introducing the Mole
A detailed step-by-step introduction to moles, molar masses, converting between mass and moles and interpreting balanced equations in terms of amounts of substance.
🧪 Limiting Reactants
Seneca: Limiting Reactants
Free interactive revision explaining limiting and excess reactants and how the limiting reactant determines the amount of product formed.
📈 Yield Calculations
Seneca: Moles & Yield
Interactive practice linking mole calculations to theoretical yield and percentage yield, with worked relationships and GCSE-style questions.
♻️ Atom Economy
Seneca: Atom Economy Calculations
Free interactive practice calculating atom economy and considering why high-atom-economy reaction pathways reduce waste and improve efficiency.
🧴 Concentration
Seneca: Concentrations of Solute
Free interactive revision covering concentration in both g/dm³ and mol/dm³ and calculations linking concentration, amount, mass and solution volume.
🎈 Gas Volumes
Seneca: Moles & Gas Volumes
Interactive Chemistry-only revision using the molar gas volume of 24 dm³ at room temperature and pressure to solve quantitative problems involving gases.

🎲 Quiz

Generate a 10-question quiz on Metals.

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Exam Practice

Apply your knowledge to exam-style questions and past-paper material.

📝 Questions
Quantitative Chemistry Past-Paper Questions
Selected AQA exam questions covering the Quantitative Chemistry topic.
✅ Mark Scheme
Quantitative Chemistry Mark Scheme
Check your answers using the corresponding AQA mark scheme.

⭐ Challenge

Coming Soon

Challenge questions, Grade 8–9 tasks and mastery badges can go here later.