Chemistry is the study of matter, its composition, structure, properties, and the transformations it undergoes during chemical reactions. At the university level, the discipline is conventionally divided into three main branches: physical chemistry, organic chemistry, and inorganic chemistry, each with distinct methodologies and theoretical frameworks.

Physical chemistry applies the principles of physics to understand the thermodynamic and kinetic behaviour of chemical systems. Organic chemistry focuses on the structure, synthesis, and reactivity of carbon-based compounds. Inorganic chemistry encompasses the chemistry of all other elements, including transition metals, coordination compounds, and materials science.

Successful study of chemistry requires a combination of conceptual understanding and mathematical fluency. Many problems involve quantitative reasoning, such as calculating equilibrium constants ($K_{eq}$) or predicting reaction rates using the Arrhenius equation, $k = A e^{-E_a / RT}$. Regular practice with mechanism-drawing and spectroscopic interpretation is essential for developing proficiency in organic chemistry.

University-level chemistry notes covering physical, organic, and inorganic chemistry with worked examples and key concepts.

• Physical Chemistry: Thermodynamics, kinetics, quantum chemistry, spectroscopy
• Organic Chemistry: Reaction mechanisms, synthesis, stereochemistry, spectroscopy
• Inorganic Chemistry: Coordination chemistry, organometallics, materials science
• Analytical Chemistry: Mass spectrometry, NMR, IR spectroscopy, chromatography

• General chemistry (first-year university level)
• Calculus (differentiation, integration, differential equations)
• Linear algebra (matrices, eigenvalues)
• Basic physics (mechanics, thermodynamics)

Start with the introductory sections to build foundational knowledge, then progress to more advanced topics. Each section includes worked examples and practice problems. Use the diagnostic tests to identify areas for improvement.

Use the sidebar to browse topics, or start with the introductory pages linked from the sidebar.

Each section includes:

• Detailed explanations of key concepts
• Worked examples with step-by-step solutions
• Practice problems with answers
• Common pitfalls and how to avoid them
• Connections to other areas of chemistry

1. Build a strong foundation: Ensure you understand the basic concepts before moving to advanced topics
2. Practice regularly: Chemistry requires active practice, not just reading
3. Draw mechanisms: Practice drawing reaction mechanisms by hand
4. Use models: Physical models help understand molecular geometry
5. Connect theory to practice: Relate theoretical concepts to real-world applications