Giant ionic structures
I can describe how metal and non-metal ions bond together to form giant ionic structures.
- Year 10
- AQA
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).
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
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.
Licence
Lesson video
Loading...
Prior knowledge starter quiz
6 Questions
Q1.How is a negative ion formed?
Q2.Explain how sodium atoms become sodium ions.
Q3.Which of the following types of bonding occurs between non–metal atoms.
Q4.Most atoms increase their stability by forming bonds with other atoms so that they have a full of electrons.
Q5.Which of the following are examples of non–metal elements?
Q6.Sulfur is in Group 6 of the periodic table. Which of the following correctly shows the charge on a sulfur ion?
Assessment exit quiz
6 Questions
Q1.Match the following key terms to their definitions.
Q2.A ionic bond is the force of attraction between oppositely–charged ions that acts in all directions.
Q3.What is the name given to the type of model shown in the diagram?
Q4.Which of the following types of structure do ionic compounds form?
Q5.Magnesium oxide, MgO, contains ionic bonds. Which of the following statements about magnesium oxide are correct?
Q6.The diagram shows a 3D model of the giant ionic structure of magnesium oxide. What is an advantage of this type of model?
