Free resources for Organic Chemistry in Chemistry: lessons, PDFs and video courses. Organic Chemistry study material for ATAR, HSC, VCE, NAPLAN with Khan Academy, Wikipedia and video solutions.
Organic chemistry is the study of carbon-containing compounds. Carbon's ability to form four covalent bonds lets it build chains, rings, and complex 3-D structures — the basis of all known life. Hydrocarbons are classified as alkanes (single bonds, CnH2n+2), alkenes (at least one double bond, CnH2n), and alkynes (at least one triple bond, CnH2n−2).
Functional groups determine a molecule's chemical behavior: alcohols (−OH), aldehydes (−CHO), ketones (C=O), carboxylic acids (−COOH), esters (−COO−), and amines (−NH₂). IUPAC nomenclature names compounds systematically from the longest carbon chain and the positions of substituents. Isomers — same formula, different structure — are a favorite exam topic.
Organic chemistry is tested in AP Chemistry, A-Level Chemistry, and is a full-year course in university. Typical questions cover naming, identifying functional groups, isomerism, and basic reaction types (substitution, addition, combustion). Drawing structures by hand is the fastest way to build intuition.
Pick the correct answer — instant feedback!
1. What is the general formula of alkanes?
2. Which functional group defines carboxylic acids?
3. How many covalent bonds does carbon typically form?
Carbon forms four strong covalent bonds and can bond to itself in chains and rings, enabling millions of distinct stable compounds.
A specific group of atoms (like −OH or −COOH) that gives a molecule its characteristic reactions regardless of the rest of the structure.
Compounds with the same molecular formula but different structural arrangements — and often very different properties.
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