Giant ionic structures
I can describe how metal and non-metal ions bond together to form giant ionic structures.
Giant ionic structures
I can describe how metal and non-metal ions bond together to form giant ionic structures.
Lesson details
Key learning points
- Salts form ionic structures because they contain metal and non-metal ions.
- In an ionic structure each positive ion attracts the negative ions and vice-versa.
- Metal ions attract all non-metal ions and vice-versa, they bond to the opposite charged ions that are closest.
- An ionic bond is the electrostatic force of attraction between oppositely-charged ions acting in all directions.
- Ionic substances are 3D lattices with regular arrangements of ions ( in a repeating pattern of +ve and -ve charge).
Common misconception
That the ionic bond is the transfer of electrons and not the electrostatic forces of attraction between the ions. The ball and stick model implies that there is a physical link between the ions.
Ensure that students have a good understanding of how ions are formed and that ionic bond forms when oppostive ions attract; before moving on to dot and cross diagrams for binary ionic substances.
Keywords
Ionic bond - the electrostatic force of attraction between oppositely-charged ions acting in all directions
Ball-and-stick model - used to represent the atoms and bonds in a chemical compound
Lattice - the regular arrangement of atoms or ions in a 3D space
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
Exit quiz
6 Questions
The electrostatic force of attraction between oppositely-charged ions.
The regular arrangement of atoms or ions in a 3D space.
A compound normally containing a metal ion and a non–metal ion.
An atom or molecule with charge due to the gain or loss of electrons.
