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S3.2 Types of Formula - Structures of Organic Molecules (IBDP Chemistry)

S3.2 Types of Formula - Structures of Organic Molecules (IBDP Chemistry)

Subject: Chemistry

Age range: 16+

Resource type: Lesson (complete)

Last updated

12 May 2026

pptx, 4.27 MB
pptx, 4.27 MB

This PowerPoint covers Types of Formula for IBDP Chemistry (first examination 2025) and provides a clear, structured introduction to representing organic molecules in different ways. It is designed to support students in moving confidently between molecular, structural, condensed, skeletal and 3D representations in line with the updated IB specification.

In organic chemistry, different types of formula are used to communicate different information about a molecule. A molecular formula shows the actual number of each atom present (e.g. C₄H₁₀), while an empirical formula shows the simplest whole-number ratio of atoms. Structural, condensed and skeletal formulae progressively show more or less detail about bonding and connectivity. This lesson helps students understand when and why each representation is used, and how to interconvert between them accurately.

The PowerPoint includes:
• A true/false retrieval starter linked to oxidation states
• Clear definitions of key terms including catenation, full structural formula, condensed structural formula, skeletal formula and stereochemical formula
• Explanation of carbon’s ability to form chains and rings
• Step-by-step guidance on converting full structural formulae to skeletal formulae
• Discussion of isomerism and structural differences
• Links to VSEPR theory and tetrahedral geometry (109.5° bond angles)
• Introduction to wedge-and-dash stereochemical notation
• Reference to 3D ball-and-stick models and virtual modelling tools
• Practice questions and mini whiteboard tasks

The resource is provided as a fully editable .pptx PowerPoint, allowing you to adapt examples or add exam-style practice.

This lesson is ideal for initial teaching, consolidation or revision of formula representation skills and builds essential foundations for organic reaction mechanisms, isomerism and stereochemistry later in the IB Diploma Programme course.

Get this resource as part of a bundle and save up to 33%

A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.

Bundle

BUNDLE S3 Classification of Matter, SL Content Only (IBDP Chemistry)

This bundle of PowerPoints covers the SL content of S3 Classification of Matter for IBDP Chemistry (first examination 2025), bringing together key ideas from the periodic table and introductory organic chemistry in one structured resource. It is designed to help students classify substances based on their structure, composition and properties, while building the knowledge needed for later topics in bonding, reactivity and analysis. In IBDP Chemistry, classification of matter involves organising elements and compounds into meaningful groups so that patterns in their behaviour can be understood and predicted. This bundle supports that aim through two major sections. S3.1 develops student understanding of the periodic table, including its structure, electron arrangement, atomic and ionic radius, periodic trends, Group 1 and Group 17 elements, the metallic and non-metallic continuum, and oxidation states. S3.2 then introduces the classification of organic compounds through types of formula, functional groups, homologous series, nomenclature of straight-chain and branched-chain compounds, and structural isomerism. This fully editable bundle includes 13 PowerPoint (.pptx) lessons: S3.1 Structure of the Periodic Table, Electrons and the Periodic Table, Trends in Atomic and Ionic Radius, Periodicity of Ionisation Energy/Electron Affinity/Electronegativity, Group 1 and 17 Elements, Metallic and Non-Metallic Continuum, and Oxidation States. S3.2 Types of Formula, Functional Groups, Homologous Series, Nomenclature of Straight-Chain Organic Compounds, Nomenclature of Branched-Chain Organic Compounds, and Structural Isomerism. Across the bundle, students are supported with retrieval starters, key word definitions, clear explanations, worked examples and practice questions with answers. These lessons are ideal for first teaching, revision, cover lessons or building a complete SL unit sequence aligned to the IBDP Chemistry specification for first examination 2025. File types included: editable PowerPoint (.pptx) files. Last updated: 2026 – improved sequencing, refined explanations, and enhanced practice activities across both periodicity and organic classification content.

£17.00
Bundle

BUNDLE S3.2 Functional Groups: Classification of Organic Compounds, SL & HL (IBDP Chemistry)

This bundle of PowerPoints covers S3.2 Functional groups: Classification of organic compounds for IBDP Chemistry (first examination 2025), including naming, isomerism and analytical techniques. It provides a complete, structured sequence of lessons to build students’ understanding of organic chemistry from foundational concepts through to HL analysis skills. Functional groups are specific groups of atoms within organic molecules that determine their chemical properties and reactions. By identifying functional groups, chemists can classify compounds, predict reactivity and systematically name molecules. This bundle supports students in developing these essential skills, progressing from basic formula types through to spectroscopy and structural determination. This fully editable bundle includes 12 PowerPoint (.pptx) lessons, carefully sequenced to support both SL and HL teaching. Early lessons focus on foundational knowledge such as types of formula, homologous series and nomenclature, before progressing into structural and stereoisomerism. The later lessons develop higher-level analytical skills, including mass spectrometry, IR spectroscopy, ¹H NMR and combining techniques to identify unknown compounds. The bundle includes: • Lesson 1: Types of Formula • Lesson 2: Functional Groups • Lesson 3: Homologous Series • Lesson 4–5: Nomenclature (straight-chain and branched-chain) • Lesson 6: Structural Isomerism • Lesson 7–8 (HL): Stereoisomerism (cis–trans and optical) • Lesson 9–12 (HL): Mass spectrometry, IR spectroscopy, ¹H NMR and combining analytical techniques Across the lessons, you will find: • Retrieval starter activities and clear key definitions • Step-by-step explanations and worked examples • Visual representations of structures and isomers • Links between structure, bonding and analytical data • Practice questions with answers for consolidation This bundle is ideal for teaching the full S3.2 topic or for structured revision, helping students build confidence in organic chemistry and prepare effectively for IB exam questions. File types included: • 12 editable PowerPoint (.pptx) files Last updated: 2026 – improved lesson sequencing, added HL analytical content, and enhanced practice questions aligned to IB assessment objectives.

£16.00
Bundle

BUNDLE S3.2 Functional Groups: Classification of Organic Compounds, SL Content (IBDP Chemistry)

This comprehensive PowerPoint bundle covers IBDP Chemistry SL Topic 3.2: Functional Groups – Classification of Organic Compounds (first examination 2025), supporting students in building a strong foundation in organic chemistry. It is ideal for teaching, revision, and exam preparation, with clear explanations and structured progression across lessons. Functional groups are specific groups of atoms within organic molecules that determine their chemical properties and reactions. This bundle helps students identify, classify, and apply their understanding of functional groups across different homologous series, while developing essential skills in representation, naming, and recognising isomerism. The bundle includes six fully editable PowerPoint (.pptx) lessons, each designed to build on prior knowledge: • Types of formula (molecular, structural, condensed, skeletal, stereochemical) and carbon’s catenation • Functional groups and classification of organic compounds • Homologous series, trends in physical properties and intermolecular forces • IUPAC nomenclature of straight-chain organic compounds • IUPAC nomenclature of branched-chain organic compounds • Structural isomerism, including chain, position and functional group isomers Each lesson includes: • Retrieval starters (true/false) to activate prior knowledge • Clear definitions of key terms and IB-specific language • Step-by-step explanations and worked examples • Visual representations of molecules and structures • Mini whiteboard activities and practice questions with answers The resource is carefully sequenced to support conceptual understanding, from basic representations of molecules through to more complex ideas such as isomerism and structure–property relationships. It is suitable for classroom teaching, independent study, or flipped learning. File types included: • 6 × Editable PowerPoint (.pptx) files Last updated: 2026 – includes improved sequencing, additional examples, enhanced practice tasks, and clearer links to IB specification requirements for first examination 2025.

£8.00

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