(SC5) Ionic Bodning

Question 1

Ions are…

Answer 1

charged particles

Question 2

Cations are…

Answer 2

positive ions

Question 3

Anions are…

Answer 3

negative ions

Question 4

Electrostatic forces are…

Answer 4

forces of attraction between all positive and negative charged objects. These forces hold the oppositely charged ions and form an ionic bond.

Question 5

Most ionic bonds are formed between…

Answer 5

metal and non-metal

Question 6

Explain the formation of a lattice structure

Answer 6

Ionic compounds are formed by the loss or gain of electrons, which are held together by strong electrostatic forces of attraction between oppositely charged ions. These strong ionic bonds allow ‘billions’ of ions to be packed together in a regular repeating arrangement.

Question 7

Polyatomic ions are…

Answer 7

ions that contain more than one atom

Question 8

Boiling and Melting points

Answer 8

The electrostatic forces between ions are very strong that’s why a lot of energy is needed to overcome these forces in order to seperate the ions and cause the substance to melt. That’s why their boiling and melting points are very high.

Question 9

Electrical Conductivity

Answer 9

Ionic compounds conduct electricity when they are molten or dissolved in aqueous solution. They do not conduct electricity when they are in the solid state because there is no free ions to move.

Question 10

Electrical Conductivity in ionic compounds

Answer 10

Anions are attracted to the positive electrode, which is called the anode. Cations are attracted to the negative electrode, which is called the cathode.

Ions moving that enable ionic compounds to conduct electricity, not electrons moving.