Properties of covalent, ionic, giant and molecular compounds
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	Structure	State	Forces between molecules	Melting and boiling points	Solubility in water	Conducts electricity?	Examples
Covalent	Molecular	Liquids and Gases	Weak	Low	Insoluble exceptions include HCl, Sugar, NH3	No	H2O, O2, CH4
Ionic	Giant lattice	Solids	Strong	High	Soluble	When molten (melted) and when dissolved in water.	CaO, NaCl, MgO

Properties of giant and molecular structures:

Giant Structures:

Strong bonds throughout structure

Unreactive

High melting points because the strong covalent bonds extend thoughout the compound

Does not conduct electricity except graphite

eg NaCl, MgO, diamond, SiO2 (silicon dioxide).

Molecular structures:

Strongs bonds within the molecules but have weak bonds between therefore low melting points.

Gases and liquids

Unreactive

eg H₂, O₂, CO₂, ethanol C₂H₆

Other Notes in this Category

1. Atomic Structure
2. Bonding and Elements
3. Fractional Distillation
4. Periodic Table Practice Questions
5. Properties of covalent, ionic, giant and molecular compounds

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