Singapore · SEABSyllabus
Chemistry syllabus, dot point by dot point
Every dot point in the Singapore Chemistrysyllabus, with a focused answer for each one. Click any dot point for a worked explainer, past exam questions, and links to related dot points. Written by Claude Opus 4.8, Anthropic's latest AI.
Acids, Bases and Salts
Module overview →- How are oxides classified, and what is happening at the particle level during neutralisation?Classify oxides as acidic, basic, amphoteric or neutral, and describe neutralisation as the reaction of hydrogen ions with hydroxide ions to form water8 min answer →
- How do chemists choose the right method to prepare a pure, dry sample of a particular salt?Describe the preparation of soluble and insoluble salts, use solubility rules to choose the method, and carry out crystallisation and precipitation to obtain a pure salt9 min answer →
- What defines an acid and a base, and what are their characteristic reactions?Describe acids as sources of hydrogen ions and bases as proton acceptors, distinguish strong and weak acids, and describe the characteristic reactions of acids with metals, carbonates and bases8 min answer →
- How does the pH scale measure acidity, and how do indicators reveal it?Describe the pH scale as a measure of acidity and alkalinity, relate pH to hydrogen ion concentration, and use indicators and universal indicator to determine pH8 min answer →
Atomic Structure and Chemical Bonding
Module overview →- What is inside an atom, and how do protons, neutrons and electrons define an element and its isotopes?Describe the structure of the atom in terms of protons, neutrons and electrons, define proton number and nucleon number, explain isotopes, and write the electronic configuration of the first twenty elements8 min answer →
- How do non-metal atoms bond by sharing electrons, and why do simple molecular and giant covalent substances differ so much?Describe covalent bonding as the sharing of electron pairs, draw dot-and-cross diagrams for simple molecules, and contrast the properties of simple molecular substances with giant covalent structures9 min answer →
- How do metals and non-metals bond by transferring electrons, and why do the compounds they form have such high melting points?Describe ionic bonding as the transfer of electrons to form ions with noble-gas configurations, draw dot-and-cross diagrams, and relate the giant ionic lattice to the properties of ionic compounds9 min answer →
- How does metallic bonding explain why metals conduct, bend and stay solid at high temperatures, and why alloys are harder than pure metals?Describe metallic bonding as a lattice of positive ions in a sea of delocalised electrons, relate it to the properties of metals, and explain why alloys are harder than pure metals8 min answer →
Electrolysis
Module overview →- How do we predict the products when an aqueous solution is electrolysed, given that water also provides ions?Predict the products of electrolysing aqueous solutions using the selective discharge rules based on ion reactivity and concentration, and write the electrode half-equations9 min answer →
- How is electrolysis used to electroplate objects and purify metals, and what happens when the electrodes take part?Describe electroplating and the purification of copper using reactive electrodes, explain the electrode reactions, and state industrial uses of electrolysis8 min answer →
- How does an electric current break down an ionic compound, and what happens at each electrode?Describe electrolysis as the decomposition of a molten or aqueous ionic compound by electricity, identify the electrodes and the movement of ions, and predict the products of electrolysing a molten compound8 min answer →
Energetics, Rates of Reaction and Redox
Module overview →- How does a catalyst speed up a reaction without being used up, and how is the rate measured and graphed?Explain the action of a catalyst in lowering activation energy, describe enzymes as biological catalysts, and interpret rate graphs of product formed against time8 min answer →
- Why do some reactions give out heat and others take it in, and how is this shown on an energy profile?Distinguish exothermic and endothermic reactions by energy change, draw and interpret energy profile diagrams, and explain energy change in terms of bond breaking and bond forming8 min answer →
- What is redox in terms of oxygen and electrons, and how are oxidising and reducing agents identified?Define oxidation and reduction in terms of oxygen and electron transfer, identify oxidising and reducing agents, and use colour changes of common reagents to test for them8 min answer →
- What factors change the speed of a chemical reaction, and how does collision theory explain them?Describe the effect of concentration, pressure, surface area and temperature on the rate of reaction, and explain these effects using collision theory9 min answer →
Experimental Chemistry and Separation Techniques
Module overview →- How do chemists identify unknown ions and gases by their characteristic reactions and tests?Carry out and interpret qualitative analysis tests for common cations, anions and gases, describing the observations and the reagents used9 min answer →
- How do chemists choose and read laboratory apparatus to measure mass, volume, time and temperature accurately?Name common laboratory apparatus and select the correct instrument to measure mass, volume of liquids and gases, time and temperature, reading each to an appropriate precision8 min answer →
- How does paper chromatography separate and identify the coloured substances in a mixture?Describe paper chromatography, interpret a chromatogram to determine the number and identity of components, and calculate and use the Rf value8 min answer →
- How do chemists choose the right method to separate and purify the components of a mixture?Describe and select separation methods (filtration, crystallisation, simple and fractional distillation, use of a separating funnel) according to the properties of the substances, and test for purity using melting and boiling points9 min answer →
Metals and the Reactivity Series
Module overview →- Why is the method used to extract a metal decided by its position in the reactivity series?Relate the method of extracting a metal to its position in the reactivity series, describe the extraction of iron in the blast furnace, and explain reduction by carbon and by electrolysis9 min answer →
- What conditions cause iron to rust, and how can rusting be prevented?Describe the conditions needed for iron to rust, explain methods of rust prevention including sacrificial protection, and relate the properties of steel and alloys to their uses8 min answer →
- How is the reactivity series built from the reactions of metals, and how does it predict displacement?Place metals in order of reactivity using their reactions with oxygen, water and acids, and use the reactivity series to predict displacement reactions of metals from their compounds9 min answer →
Organic Chemistry
Module overview →- How are ethanol and ethanoic acid made and used, and how are they linked by oxidation and esterification?Describe the properties and reactions of ethanol and ethanoic acid, including the production of ethanol, the oxidation of ethanol to ethanoic acid, and the formation of an ester9 min answer →
- What makes the alkenes more reactive than the alkanes, and how are they tested and turned into polymers?Describe the alkenes as unsaturated hydrocarbons, explain their addition reactions including the bromine test for unsaturation, and describe addition polymerisation9 min answer →
- What are the alkanes, where do they come from, and what happens when fuels burn?Describe the alkanes as a homologous series of saturated hydrocarbons from crude oil, write their formulae and combustion equations, and explain complete and incomplete combustion8 min answer →
The Particulate Nature of Matter
Module overview →- What happens to the particles and the temperature when matter changes state?Name the changes of state and explain them using the particle model, interpret heating and cooling curves, and account for the flat portions at the melting and boiling points8 min answer →
- What is diffusion, and how does it provide evidence that particles are in constant random motion?Describe and explain diffusion in gases and liquids, relate the rate of diffusion to the mass of the particles, and use diffusion as evidence for the kinetic particle model8 min answer →
- How do elements, compounds and mixtures differ at the level of particles?Distinguish between elements, compounds and mixtures, describe the difference between a compound and a mixture in terms of bonding and properties, and classify substances accordingly8 min answer →
- How does the kinetic particle model explain the properties of solids, liquids and gases?Describe the kinetic particle model of solids, liquids and gases and use it to explain their properties, including shape, volume, compressibility and the effect of temperature on particle motion8 min answer →
Stoichiometry and the Mole Concept
Module overview →- How are chemical formulae built from ionic charges, and how is a chemical equation balanced?Write formulae of ionic compounds from the charges on their ions, construct and balance chemical equations, and add state symbols8 min answer →
- How is the concentration of a solution defined, and how does a titration find an unknown concentration?Define concentration in mol per dm cubed and g per dm cubed, interconvert the two, and carry out titration calculations to find an unknown concentration9 min answer →
- How do balanced equations let chemists calculate reacting masses, gas volumes and percentage yield?Use mole ratios from balanced equations to calculate reacting masses and gas volumes, identify the limiting reagent, and calculate percentage yield9 min answer →
- How do chemists count atoms by weighing, using relative masses and the mole?Define relative atomic and molecular mass, the mole and the Avogadro constant, and interconvert mass, amount in moles and number of particles8 min answer →
The Periodic Table
Module overview →- How is the Periodic Table arranged, and how does an element's position relate to its electronic structure?Describe the arrangement of elements in the Periodic Table by proton number into periods and groups, relate position to electronic configuration, and describe the metal to non-metal trend across a period8 min answer →
- How do the properties of the alkali metals and the halogens change down their groups, and why?Describe the properties and trends of Group I (the alkali metals) and Group VII (the halogens), including reactivity trends down each group and displacement reactions of the halogens9 min answer →
- What makes the transition elements different from the main-group metals, and why are the noble gases so unreactive?Describe the characteristic properties of the transition elements and contrast them with Group I metals, and explain the unreactivity and uses of the noble gases in terms of full outer shells8 min answer →