The diagram below shows the electron arrangements of magnesium and oxygen:

a) Draw a diagram showing how a bond is made between magnesium and oxygen.

(2 marks)

b) What name is given to this type of chemical bond?

(1 mark)

(Marks available: 3)

Answer

 

Answer outline and marking scheme for question: 1

a)

(2 electrons moving = 1 mark)

(complete transfer = 1 mark)

b)Ionic

(1 mark)

(Total = 3 marks)

a) What type of chemical bond would you expect in hydrogen fluoride, HF?

(1 mark)

b) Draw a diagram to show how this bond is formed.

(2 marks)

(Marks available: 3)

Answer

 

Answer outline and marking scheme for question: 2

a) Covalent

(1 mark)

b)

(1 mark = 1 shared pair electrons)

(1 mark = 1 electron from each atom)

(Total = 3 marks)

Look at the diagram below:

a) Which type of structure is shown in the diagram?

(1 mark)

b) Will a material with this structure be able to conduct electricity?

Explain your answer.

(2 marks)

(Marks available: 3)

Answer

Look at the table below:

a) Which substance, A,B or C could have a metallic structure?

(1 mark)

b) Which substance, A, B or C could have a simple covalent structure?

(1 mark)

(Marks available: 2)

Answer