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Covalent & Ionic

Compounds:

Structure & physical

properties

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Structure of Ionic Compounds

Crystal lattices

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Physical Properties of Ionic Compounds

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Physical Properties Ionic Compounds

States (at room temperature) Solid

Electrical conductivitySolid: No   Liquid: Yes   Aqueous: Yes (if soluble)

Boiling point and Melting Point High

Solubility in water Often high

Thermal conductivity Low

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COVALENT COMPOUNDS: MOLECULES

Silicon

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Covalent Compounds; Macromolecules

Diamond

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Physical properties

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Physical properties Covalent compounds

States (at room temperature) Solid, liquid, gas

Electrical conductivity Usually none

Boiling point and Melting pointVaries, but usually lower than ionic compounds

Solubility in waterVaries, but usually lower than ionic compounds

Thermal conductivity Usually low

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Thank

you