AQA GCSE Chemistry (8462)
Free questions for AQA GCSE Separate Chemistry. Choose Foundation or Higher beside a topic to open that set of questions straight away.
Some activities are Higher tier only. The list covers selected topics, not the entire specification. You can check the full official AQA Chemistry specification.
Atoms, formulae and bonding
Start with atoms and ions, then work through formulae and structure.
Periodic table and group trends
Use electronic structure and patterns in Groups 1, 7 and 0 to predict properties.
Atoms and ions
Find proton, neutron and electron numbers from atomic number, mass number and ion charge.
Writing ionic formulae
Combine positive and negative ions in the ratio needed to make a neutral compound.
Relative formula mass
Add relative atomic masses, taking care with subscripts and brackets.
Bonding, structure and properties
Explain melting point and electrical conductivity using bonds, particles and mobile charges.
Equations and calculations
Balancing, masses, formulae, solutions and titrations.
Balancing equations
Use whole-number coefficients to balance equations without changing the chemical formulae.
Reacting masses
Use a balanced equation to calculate a mass of reactant or product.
Mass from concentration
Convert solution volume when needed, then calculate the mass of solute.
Limiting reactants
Find which reactant runs out first. Higher-tier questions also calculate the maximum mass of product.
Percentage yield and atom economy
Calculate percentage yield from actual and theoretical masses, then work out atom economy.
Percentage composition and formulae
Calculate mass percentages and oxygen gained. Edexcel questions also use empirical and molecular formulae.
Titration readings and calculations
Read burettes and choose concordant titres. Higher-tier questions also calculate concentration.
Reactions and electrolysis
Predict products and explain which substances react.
Halogen displacement reactions
Predict halogen reactions, compare coloured solutions with controls and infer the reactivity order.
Reactions of acids
Predict the salts and other products when acids react with metals, oxides, hydroxides and carbonates.
Metal displacement reactions
Use the reactivity series to predict displacement reactions. Higher-tier questions include electron transfer.
Electrolysis: electrolytes and electrodes
Use the electrolyte, its physical state and the electrode materials to predict the products.
Products of electrolysis
Predict the products at each electrode. Higher-tier questions also use half-equations.
Rates, energy and equilibrium
Interpret graphs, calculate energy changes and explain equilibrium.
Rates and graphs
Plot gas volume against time and calculate mean rate from a table or graph.
Rates of reaction: graphs
Plot gas-volume data, calculate mean rates and interpret gradients, including tangents where required.
Rate investigations
Interpret gas collection and disappearing-cross experiments for AQA and Edexcel.
Energy profile diagrams
Read energy changes and activation energies from reaction profiles, including the effect of a catalyst.
Bond energy calculations
Use bond energies to estimate the energy change for a reaction. Higher tier.
Temperature and equilibrium
Predict how a temperature change affects equilibrium from the stated energy change. Higher tier.
The Haber process
Recall how ammonia is made. Higher-tier questions ask you to compare reaction rate and yield.
Organic chemistry
Combustion, cracking and addition reactions of alkenes.
Combustion equations
Balance complete combustion equations and predict the products when oxygen is limited.
Cracking hydrocarbons
Balance cracking equations and explain why the shorter hydrocarbons are useful.
Addition reactions of alkenes
Work out what adds across a C=C bond. The reactions follow your chosen exam board.
Tests and practical work
Identify gases, test unknown salts and interpret chromatograms.
Tests for gases
Use test observations to identify hydrogen, oxygen, carbon dioxide and chlorine.
Ion tests and unknown salts
Choose reagents, record test results and identify the ions in an unknown soluble salt.
Chromatography and ink separation
Calculate Rf values and decide what a chromatogram can tell you about a mixture.
Materials and resources
Corrosion, rust prevention and treating water for drinking.
Rusting and corrosion
Use experimental results to explain rusting, protective coatings and sacrificial protection.
Treating water for drinking
Choose water treatment steps, interpret residue data and distinguish potable water from pure water.