Chemistry — Atomic Structure and Bonding

Exam board: WJEC  |  Back to subjects

Board-Specific Note

WJEC specification; mainly taken in Wales.

Learning Objectives

• Describe atomic structure
• Explain ionic and covalent bonding
• Use electronegativity

Key Points

• Protons, neutrons, electrons
• Ionic vs covalent bonds
• Electronegativity trends across the period

Lesson Plan (50 minutes)

1. Starter (5 min): Recall prior knowledge of atomic structure and bonding with quick questions.
2. Teaching (15 min): Work through each of the learning objectives, explaining principles step by step.
3. Key points review (5 min): Revisit the key points together, confirming understanding.
4. Worked example (10 min): Model the example question: Number of protons in carbon-14?. Solution: 6 (atomic number is 6)
5. Practice (10 min): Students attempt the practice questions independently; circulate and support.
6. Plenary (5 min): Review answers and address misconceptions.

Homework

• State the charge of a neutron
• Give an example of an ionic compound
• Which element is most electronegative?

Assessment

Check practice answers against the model answer; use the built-in practice questions as formative assessment.