Chemical bonds, ionic, covalent and metallic
- Created by: NinaTan
- Created on: 07-01-18 17:27
View mindmap
- Chemical bonds, ionic, covalent and metallic
- When atoms share pairs of electrons, they form covalent bonds. These bonds between atoms are strong.
- Covalently bonded substances may consist of small molecules.
- Some covalently bonded substances have very large molecules, such as polymers or have giant covalent structures, such as diamond and silicon dioxide.
- Covalently bonded substances may consist of small molecules.
- Metal atoms lose electrons to become positively charged ions.
- Non-metal atoms gain electrons to become negatively charged ions.
- For ionic bonding, the particles are oppositely charged ions.
- The ions produced by metals in Groups 1 and 2 and by non-metals in Groups 6 and 7 have the electronic structure of a noble gas.
- The electron transfer during the formation of an ionic compound can be represented by a dot and cross diagram
- The ions produced by metals in Groups 1 and 2 and by non-metals in Groups 6 and 7 have the electronic structure of a noble gas.
- Metals consist of giant structures of atoms arranged in a regular pattern.
- The electrons in the outer shell of metal atoms are delocalised and so are free to move through the whole structure.
- The metal is held together by the strong forces of attraction between the positive nuclei and the delocalised electrons.
- Metals are good conductors of electricity and thermal energy.
- The metal is held together by the strong forces of attraction between the positive nuclei and the delocalised electrons.
- The electrons in the outer shell of metal atoms are delocalised and so are free to move through the whole structure.
- An ionic compound is a giant structure of ions.
- Ionic compounds are held together by strong electrostatic forces of attraction between oppositely charged ions.
- These forces act in all directions in the lattice and this is called ionic bonding.
- Ionic compounds are held together by strong electrostatic forces of attraction between oppositely charged ions.
- When atoms share pairs of electrons, they form covalent bonds. These bonds between atoms are strong.
Comments
No comments have yet been made