Types of bonding
- Created by: Adrian.A
- Created on: 30-08-17 10:37
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- Types of bonding
- Covalent
- It is a pair of electrons shared between two atoms
- Giant molecular substances
- All atoms are joined by strong covalent bonds
- High melting and boiling points
- Usually insoluble in water.
- Examples - Diamond, Graphite
- Graphite has delocalized electrons, these carry current.
- Don't conduct electricity except graphite
- Simple Molecular substances
- There are covalent bonds that make molecules.
- But between the molecules are weak intermolecular forces.
- -low melting and boiling points.
- don't conduct electricity, due to lack of ions.
- examples - carbon dioxide, hydrogen
- There are covalent bonds that make molecules.
- between non-metals
- Ionic
- Cation - positively charged
- Anion - negatively charged
- The transfer of electrons between atoms to fill an outer shell
- They conduct electricity when in molten or are aqueous.
- This allows ions to move and carry current.
- They have high melting and boiling points.
- They are arranged in a lattice stucture
- Due to strong electrostatic forces, a lot of energy is needed to break them
- They are arranged in a lattice stucture
- Between Metal and non-metal
- Metallic
- between metals
- It is the attraction between cations and electrons.
- It can carry electric current due to delocalised electrons.
- high boiling and melting points
- don't usually dissolve in water
- Covalent
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