Singapore · MOE Syllabus Outcomes
Secondary 4 Chemistry
This course explores the fundamental principles governing matter and its changes. Students analyze chemical systems through the lens of kinetic particle theory, stoichiometry, and energy changes to predict and explain the behavior of substances in real world contexts.

01Atomic Architecture and Chemical Bonding
Investigation into how subatomic arrangements determine the physical and chemical properties of elements and compounds.
Students will analyze the historical development of atomic models and identify the properties of protons, neutrons, and electrons.
Students will explore the distribution of electrons in shells, focusing on valence electrons and their role in determining an atom's stability and reactivity.
Students will investigate how atoms achieve stable electron configurations by forming ions and subsequently ionic bonds.
Students will examine the characteristic physical properties of ionic compounds and relate them to their giant ionic lattice structure.
Students will explore the sharing of electrons between non-metal atoms to form covalent bonds and simple molecular structures.
Students will analyze the physical properties of simple molecular substances and relate them to weak intermolecular forces.
Students will investigate the unique properties of giant covalent structures like diamond, graphite, and silicon dioxide.
Students will examine the 'sea of delocalized electrons' model and its impact on the physical utility of metals and alloys.

02The Language of Chemistry: Stoichiometry
Quantitative analysis of chemical formulas and equations to predict the yields of reactions.
Students will define and calculate relative atomic mass, relative isotopic mass, and relative molecular/formula mass.
Students will bridge the gap between the microscopic world of atoms and the macroscopic world of grams using the mole concept.
Students will determine the empirical and molecular formulae of compounds from experimental data.
Students will write and balance chemical equations and use them to determine stoichiometric ratios.
Students will perform calculations involving moles, mass, and chemical equations to predict reaction outcomes.
Students will identify limiting reagents and calculate theoretical and percentage yields in chemical processes.
Students will apply the concept of molar volume to calculate quantities of gaseous reactants and products.
Students will define and calculate the concentration of solutions in g/dm³ and mol/dm³.
Students will use volumetric analysis data to determine the precise concentration of aqueous solutions.

03Chemical Energetics and Kinetics
Exploring why reactions happen at different speeds and how energy is exchanged with the surroundings.
Students will differentiate between exothermic and endothermic reactions based on energy changes.
Students will investigate the factors that influence the frequency and success of molecular collisions using collision theory.
Students will examine how changes in concentration and pressure influence the rate of chemical reactions.
Students will investigate how changes in surface area and temperature influence the rate of chemical reactions.
Students will analyze how catalysts provide alternative pathways to speed up chemical transformations without being consumed.

04Patterns in the Periodic Table
Understanding the systematic trends and properties of elements based on their position in the table.
Students will understand the historical development and current organization of the periodic table based on atomic number.
Students will compare the reactivity and physical properties of Group 1 elements.
Students will compare the reactivity and physical properties of Group 17 elements.
Students will investigate the inert nature of noble gases and their uses.
Students will explore the unique properties of d-block elements including variable oxidation states and colored compounds.
Students will identify general trends in physical and chemical properties across a period, focusing on the change from metallic to non-metallic character.

05Acids, Bases, and Salts
Investigating the chemistry of protons and the synthesis of ionic compounds.
Students will define acidity and alkalinity through ion concentration and pH scales.
Students will investigate the characteristic chemical reactions of acids and bases.
Students will understand neutralization reactions and the general methods for preparing salts.
Students will master techniques for synthesizing pure, dry samples of soluble salts using titration and excess reactant methods.
Students will learn to prepare insoluble salts using precipitation reactions.
Students will use chemical tests to identify unknown cations.
Students will use chemical tests to identify unknown anions and gases.

06Redox and Electrochemistry
Analyzing reactions involving electron transfer and the conversion between chemical and electrical energy.
Students will identify oxidation and reduction in terms of oxygen transfer, hydrogen transfer, and electron movement.
Students will understand the reactivity series of metals and its relation to redox reactions and displacement.
Students will understand the basic principles of electrolysis and the components of an electrolytic cell.
Students will predict the products of electrolysis for molten ionic compounds.
Students will predict the products of electrolysis for aqueous solutions, considering ion reactivity and concentration.
Students will explore the industrial applications of electrolysis, such as electroplating and purification of metals.
Students will explore how spontaneous redox reactions generate an electric current in chemical cells.

07Metals and Their Extraction
Understanding the properties of metals, their extraction from ores, and their uses.
Students will review the general physical and chemical properties of metals and relate them to their uses.
Students will learn about the different methods of metal extraction based on their reactivity.
Students will investigate the extraction of iron in the blast furnace and the production of steel.
Students will understand the process of corrosion, particularly rusting, and methods of prevention.

08Organic Chemistry
Introduction to the study of carbon compounds, their structures, properties, and reactions.
Students will define organic chemistry, understand homologous series, and represent organic compounds.
Students will study the structure, nomenclature, and reactions of alkanes.
Students will study the structure, nomenclature, and reactions of alkenes, focusing on the C=C double bond.
Students will study the structure, nomenclature, and reactions of simple alcohols.
Students will study the structure, nomenclature, and reactions of simple carboxylic acids.
Students will understand the formation of synthetic polymers through addition and condensation polymerization.

09Atmosphere and Environment
Exploring the composition of air, air pollution, and its environmental impact.
Students will analyze the composition of clean air and the properties of its main components.
Students will identify common air pollutants, their sources, and their effects.
Students will understand the greenhouse effect, global warming, and its consequences.
Students will investigate the causes and effects of acid rain and methods of control.