This page offers an extensive collection of chemistry exercises for upper secondary school level. The different subject areas can be accessed via the "Topics" menu.
ATTENTION: currently (October 2026), the site is being extended to support multiple languages.
General Questions 
Atomic Structure 
Chemical Equilibrium
Organic Chemistry
Quantum Mechanics
Radioactivity
Redox
Acid-Base Chemistry
Salts
Stoichiometry
Thermodynamics
Intermolecular Forces
all exercises 
Table of Contents
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