Dot-and-cross for MgO and CaCl2

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• 7 sections of explanation, worked examples and diagrams
• 1 practice task with hints and worked answers
• A quiz that marks itself as you go
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Other lessons in this sub-strand

1. Types of bonding
2. Structure and properties
3. Why atoms form bonds
4. Ionic bonding: electron transfer
5. Ionic charges and formulae
6. Dot-and-cross diagram for NaCl
7. Dot-and-cross for MgO and CaCl2
8. The giant ionic lattice
9. Properties of ionic compounds
10. Kenyan salt and Magadi soda
11. Covalent bonding: sharing pairs
12. Dot-and-cross for H2, Cl2 and HCl
13. Water, ammonia and methane
14. Double and triple covalent bonds
15. Simple molecular structures
16. Properties of simple molecular substances
17. Diamond: a giant covalent network
18. Graphite: layers that slide and conduct
19. Sand and silica: another giant covalent solid
20. Metallic bonding: a sea of electrons
21. Metal properties from the electron sea
22. Conductivity across four structures
23. Investigating unknown solids
24. Choosing materials from structure