topic 2a - bonding and structure (3. ionic compounds)

Question 1

what is the structure of an ionic compound

Answer 1

giant ionic lattice (closely packed regular arrangement). strong electrostatic forces of attraction between oppositely charged ions

Question 2

state the different ways ionic compounds can be represneted

Answer 2

dot and cross diagrams
3d models
ball and stick models

Question 3

what is a 3d model

Answer 3

shows the relative sizes of the ions and the regular pattern however only lets you see the outer layer

Question 4

what are ball and stick models

Answer 4

shows a regular pattern and how the compound is arranged. suggest there are gaps between the ions.

Question 5

melting and boiling point of ionic compounds

Answer 5

high melting and boiling points due to strong electrostatic attraction between the ions.

Question 6

solubility of ionic compounds

Answer 6

most ionic compounds dissolve easily in water

Question 7

electrical conductivity of ionic compounds

Answer 7

don’t conduct electricity when solid, however when liquid the ions are free to more so they will carry an electric charge.