Yr-10 Tripple Chemistry
Structure and Bonding Revision Questions
Q1.
This question is about carbon.
(a) Carbon atoms form covalent bonds.
Complete the sentence.
Choose the answer from the box.
gained lost shared
When carbon atoms form covalent bonds, electrons
are ________________________ .
(1)
(b) Which is a form of carbon?
Tick (✓) one box.
Ammonia
Fullerene
Silica
(1)
Diamond and graphite are other forms of carbon.
Diamond and graphite have different properties.
The figure represents the arrangement of carbon atoms in diamond and in graphite.
Page 1 of 7
(c) The table below shows the relative hardness of diamond and of graphite.
Relative hardness
Diamond 10
Graphite 1.6
Calculate how many times harder diamond is than graphite.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
Number of times harder = _____________________
(2)
(d) Explain why diamond is hard.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
(3)
(e) Explain why graphite conducts electricity.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
(3)
(Total 10 marks)
Q2.
The table below shows some properties of four substances, G, H, I and J.
Page 2 of 7
Electrical Electrical
Melting point
Substance conductivity when conductivity when
in °C
solid liquid
G 63 Poor Poor
H 714 Poor Good
I 1083 Good Good
J 3550 Poor Poor
The four substances, G, H, I and J all have different structures.
(a) What is the type of bonding in substance G and the structure of substance G?
Use the table above.
Type of bonding ____________________________________________________
Structure __________________________________________________________
(2)
(b) Explain why substance J has a high melting point.
You should answer in terms of structure and bonding.
Use the table above.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
(3)
(c) Explain the electrical conductivity of:
• substance H
• substance I.
Use the table above.
Substance H ________________________________________________________
___________________________________________________________________
___________________________________________________________________
Page 3 of 7
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
Substance I ________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
(5)
(Total 10 marks)
Q3.
In this question you will be assessed on using good English, organising
information clearly and using specialist terms where appropriate.
Explain why chlorine (Cl2) is a gas at room temperature, but sodium chloride (NaCl) is a
solid at room temperature.
Chlorine Sodium chloride
Include a description of the bonding and structure of chlorine and sodium chloride in your
answer.
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
Page 4 of 7
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
Extra space _____________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
(Total 6 marks)
Q4.
The diagram shows a small part of the structure of silicon dioxide.
(a) Use the diagram above to answer the question.
Draw a ring around the correct answer to complete each sentence.
two
In silicon dioxide, each silicon atom is bonded with three oxygen atoms.
four
ionic.
The bonds in silicon dioxide are covalent.
metallic.
(2)
(b)
Page 5 of 7
© Oleksiy Mark/iStock
Silicon dioxide is used as the inside layer of furnaces.
Suggest why.
___________________________________________________________________
___________________________________________________________________
(1)
(c) Nanowires can be made from silicon dioxide.
Draw a ring around the correct answer to complete the sentence.
brittle.
The word ‘nano’ means the wires are very thick.
thin.
(1)
(Total 4 marks)
Q5.
Silicon dioxide is used as a lining for furnaces.
Furnaces can be used to melt iron for recycling.
Page 6 of 7
© Oleksiy Mark/iStock
The diagram shows a small part of the structure of silicon dioxide.
Explain why silicon dioxide is a suitable material for lining furnaces.
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
(Total 4 marks)
Page 7 of 7
