
A complete, ready-to-teach lesson for Unit 1 (Principles and Applications of Science I), chemistry section: dot-and-cross diagrams, multiple bonds and dative (coordinate) bonds.
Learning objectives:
- Explain what holds the atoms in a covalent bond together.
- Draw dot-and-cross diagrams for simple molecules, showing bonding pairs and lone pairs.
- Draw molecules that contain double and triple bonds.
- Explain how a dative covalent bond forms and draw ions such as NH₄⁺ and H₃O⁺.
What’s included:
- Student worksheet (PDF and editable Word)
- Teacher version with model answers and mark schemes (PDF and editable Word)
- Teacher notes: lesson flow, common misconceptions and practical/safety notes
- Retrieval starter (5 marks)
- Structured tasks with key-idea boxes and clear diagrams
- Check for Understanding quiz (10 marks) with a confidence self-assessment
- Exam-style practice (15 marks), ending with a levels-marked 6-mark question with indicative content
Specification coverage:
- A1 · Covalent bonding: the bond as an electrostatic attraction between two nuclei and the electron pair(s) they share.
- A1 · Covalent bonding: drawing dot-and-cross diagrams for simple molecules, including double, triple and dative (coordinate) bonds.
About 60 minutes of teaching; the exam-style section works in class or as homework. All questions are original.
Written for the Pearson BTEC Level 3 Nationals in Applied Science. Not endorsed by Pearson. Single-school licence.
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