CHEMICAL BONDING

1. non  metal to non metal

2. Covalant bonding

2.1. sharing electrons to complete outermost shell

2.2. Low melting points and boiling points.

2.3. Soft or brittle solid forms.

2.4. Poor electrical and thermal conductivity.

2.5. Usually insoluble in water

2.6. Usually liquid or gas

2.7. weak inter-molecular force

3. Metallic bonding

3.1. giant lattice

3.2. metal ions in a sea of electrons

3.3. strong metallic bonds as a result of attraction

3.4. melleable and ductile

3.5. conduct electricity

3.6. high fixed melting and boiling point

4. Ionic compound

4.1. form giant lattice

4.2. high melting and boiling point

4.3. don't conduct electricity when solid

4.4. usually soluble in water

4.5. conduct electricity when molten

4.5.1. t electricity

4.6. metals to non metals

4.7. gaing and losing electrons to get stable

4.8. become ions after bonding

4.9. are hard but brittle

4.10. total negative charge  should be equal to positive charge

4.11. the compound has no overall charge