SPM Chemistry Reactions & Processes (KSSM 4541)

Every named SPM Chemistry reaction, with its equation and what you'll observe.
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These are the named reactions and processes you must know for SPM Chemistry (code 4541). Each page gives the balanced equation, the conditions, the observations, and where the reaction appears in the exam.
Form 4
- Neutralisation of acid and alkali
- Acid and a reactive metal
- Acid and a metal carbonate
- Acid and a metal oxide
- Precipitation of insoluble salts
- Thermal decomposition of carbonates
- Thermal decomposition of nitrates
- Formation of an ionic compound
- Formation of a covalent compound
- Group 1 metals with water
- Group 17 elements with iron
- Combustion of carbon and sulfur
- The Contact process (sulfuric acid)
- The Haber process (ammonia)
- Effect of concentration on rate
- Catalysed decomposition of hydrogen peroxide
- Tests for hydrogen, oxygen and carbon dioxide
- Tests for ammonia and chlorine
Form 5
- Displacement of metals
- Displacement of halogens
- Electrolysis of molten compounds
- Electrolysis of aqueous solutions
- Rusting of iron
- Reduction of a metal oxide by carbon
- Combustion of alkanes
- Substitution of alkanes with halogens
- Addition reactions of alkenes
- Oxidation of alcohols
- Esterification
- Combustion of alcohols
- Vulcanisation of rubber
- Saponification (soap making)
- Heat of neutralisation
- Heat of combustion
- Cation confirmatory tests
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Source: DSKP KSSM Chemistry Form 4 and 5 (English version), Format Pentaksiran Sijil Pelajaran Malaysia mulai 2021, Kimia (4541)
Written by the spmchemistry.com.my editorial teamUpdated: 4 September 2026