Metallic bonding — Difficult
Transfer your understanding to a changed context, justify decisions and check your reasoning. No hints during the test.
Extension practice
Metal properties are covered, but the metallic-bonding model is additional practice.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- igcse-cambridge-cie-0653 2028–2029 · C2.1–C2.4; C9.1
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