pptx, 4.05 MB
pptx, 4.05 MB
pdf, 314.66 KB
pdf, 314.66 KB
pdf, 332.92 KB
pdf, 332.92 KB
pdf, 125.32 KB
pdf, 125.32 KB

Reactions of Alkenes (Cracking & Halogens) – Lesson, Worksheet & Laboratory – Unit 4 – IGCSE Chemistry
Cracking Hydrocarbons, Bromine Addition, and Alkenes Test

This Synapse Science resource teaches students about the reactivity of alkenes and the industrial importance of cracking. Students explore how long-chain alkanes are converted to alkenes via catalytic cracking, and how alkenes react with halogens in addition reactions.

The included laboratory practical uses bromine water to distinguish alkanes and alkenes through visible colour change, reinforcing the concept of unsaturation.

TOPICS COVERED – SPECIFICATION POINTS

  • 4.17: Describe how long-chain alkanes are converted to alkenes and shorter-chain alkanes by catalytic cracking
  • 4.18: Explain why cracking is necessary, in terms of the balance between supply and demand for different fractions
  • 4.27: Describe the reactions of alkenes with bromine to produce dibromo-alkanes
  • 4.28: Describe how bromine water can be used to distinguish between an alkane and an alkene:contentReference[oaicite:0]{index=0}

WHAT’S INCLUDED

  • Editable PowerPoint lesson covering cracking theory, alkene reactivity, and halogen addition
  • Printable worksheet with drawing tasks, reactions, and comparison tables
  • Laboratory worksheet: Bromine water test for alkenes vs alkanes
  • Safety notes, teacher guidance, and structured observation table
  • Scaffolded conclusion writing and reaction equation practice

KEY FEATURES

  • Reinforces addition reactions and functional group testing
  • Industrial relevance of cracking clearly explained
  • Ideal for Triple Science (Paper 2) students
  • Clean Synapse Science layout for smooth teaching and revision

KEYWORDS
Edexcel IGCSE Chemistry, Alkenes, Cracking, Hydrocarbons, Bromine Water Test, Addition Reaction, Unsaturation, Dibromoalkanes, Organic Chemistry, Synapse Science, Unit 4, Practical, Lesson, Worksheet

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Unit 4 Complete Bundle (Organic Chemistry) - IGCSE Chemistry

IGCSE Chemistry – Unit 4 Complete Bundle (Organic Chemistry) Lessons, Worksheets, Practicals, Required Practicals, Mark Schemes This Synapse Science bundle includes every lesson, worksheet, and practical for **Unit 4: Organic Chemistry** of the **Edexcel IGCSE Chemistry** course. It comprehensively covers all required content for both **Paper 1 (Core)** and **Paper 2 (Triple Science)**. Each resource is fully editable, visually clean, and designed to be used directly in class or for revision. Every worksheet includes scaffolded tasks, key vocabulary, and model answers or mark schemes where relevant. Practical sheets follow the consistent Synapse Science format with clear steps, results tables, and safety guidance. --- LESSONS INCLUDED – UNIT 4: ORGANIC CHEMISTRY (IN SPEC ORDER) 1. Introduction to Organic Compounds – Lesson & Worksheet 2. Naming Organic Compounds – Lesson & Worksheet 3. Crude Oil – Lesson & Worksheet 4. Burning Hydrocarbons – Lesson & Laboratory 5. Pollutants – Lesson & Worksheet 6. Alkanes – Lesson & Worksheet 7. Alkenes – Lesson & Worksheet 8. Reactions of Alkenes (Cracking & Halogens) – Lesson, Worksheet & Laboratory 9. Alcohols (Triple) – Lesson & Worksheet 10. Making Alcohols (Triple) – Lesson & Worksheet 11. Carboxylic Acids (Triple) – Lesson & Worksheet 12. Esters (Triple) – Lesson & Worksheet 13. Making Esters (Triple) – Lesson & Required Practical 14. Polymers – Lesson & Worksheet 15. Condensation Polymers (Triple) – Lesson & Worksheet --- WHAT’S INCLUDED - 15 full lesson PowerPoints (editable) - Worksheets with structured questions and space for answers - Required practicals with student versions and teacher notes - Model answers and assessment-style mark schemes - Key diagrams, keywords, and scaffolded support - Consistent Synapse Science formatting for all resources --- IDEAL FOR - Edexcel IGCSE Chemistry Teachers (Paper 1 & Paper 2 / Triple) - Full delivery of Organic Chemistry with minimal prep - Revision, homework, or flipped classroom settings - Students needing clarity and practice with exam-aligned tasks --- KEYWORDS Edexcel IGCSE Chemistry, Organic Chemistry, Unit 4, Alkanes, Alkenes, Alcohols, Esters, Polymers, Required Practical, Triple Science, Paper 1, Paper 2, Synapse Science, Practical Chemistry, Lessons, Worksheets

£25.00

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