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Semelhante a Properties of Compounds - Ionic, Covalent and Metallic
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Properties of Compounds - Ionic, Covalent and Metallic
- 3. They are crystalline solids 2D Image
- 4. 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.
- 5. 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.
- 9. 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 .
- 10. These free electrons explain how electricity can pass through solid metals.