Properties of Compounds - Ionic, Covalent and Metallic

Recap, we have learnt ,[object Object],[object Object],[object Object],[object Object],[object Object],- Balancing charges

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They are crystalline solids 2D Image

Why do ionic compounds have high melting points? Opposite charges attract , forming strong ionic bonds . Thus a lot of energy is needed to separate the ions.

Why do ionic compounds dissolve in water? The electrons in H 2 O molecule are not evenly spread. One end of the molecule is slightly negative compared to the other end.

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[object Object],[object Object],[object Object],[object Object],Do covalent compounds dissolve and conduct electricity too?

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Metal atoms (or ions) are held together by a sea of electrons. Each metal atom gives up electrons from its outer shell into the sea or cloud of electrons .

These free electrons explain how electricity can pass through solid metals.

Lets Compare the 3 types of compounds – Covalent, Ionic & Metallic ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Questions : Copy these onto your notes ,[object Object],[object Object],[object Object]

Summary ,[object Object],[object Object],[object Object],[object Object]

Properties of Compounds - Ionic, Covalent and Metallic

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Properties of Compounds - Ionic, Covalent and Metallic