Chemistry VWO
Practise core skills based on the Dutch chemistry VWO 2026 syllabus, from reaction calculations to conductivity and interpreting measurement data. Get short explanations, multiple-choice questions and immediate feedback. Work at your own pace and earn a star with 4 out of 5 correct answers.
Converting units
Theory · 3 min
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4 out of 5 correct = one starConverting units
Convert mass and volume and calculate a concentration in mol/L.
Electrical conductivity
Explain conduction in metals and salts using electrons and ions.
Limiting reactants and excess
Identify the limiting reactant and calculate product and excess.
Calculating percentage yield
Calculate percentage yield from actual and theoretical yield.
Concentration and dilution
Calculate the dilution factor and the concentration after dilution.
Calibration curves and concentration
Read a calibration curve and calculate a diluted sample’s concentration.
Separation methods
Choose filtration, evaporation or distillation using substance properties.
Chemical reasoning
Connect an observation to a particle model and a conclusion.