AQA GCSE Chemistry · 8462

Covalent Bonding Mechanism

What you need to know

Draw dot and cross diagrams for small molecules (e.g., H2, Cl2, O2, N2, HCl, H2O, NH3, CH4).
Recognize substances containing small molecules, polymers, and giant covalent structures.
Represent covalent bonds using lines in structural formulas.
Deduce molecular formulas from models.
Evaluate limitations of different models for representing covalent structures.