Topic 4 Materials
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This is a multiple choice quiz intended for you to test your own knowledge. Select the statement that best fits the question.
- 1.What is needed to break the forces between particles in a solid?
- A.
Light
- B.
Sound
- C.
Energy
- 2.A solid has a high melting point if the forces between its particles are:
- A.
Large
- B.
Small
- C.
Weak
- 3.Increasing the chain length of a polymer makes it:
- A.
Harder
- B.
More flexible
- C.
Less flexible
- 4.Cross linking the chains makes a polymer:
- A.
Harder
- B.
Softer
- C.
Less flexible
- 5.An atom consists of:
- A.
An electron surrounded by a nucleus
- B.
A nucleus containing electrons
- C.
A nucleus surrounded by electrons
- 6.Which properties make aluminium suitable for overhead mains electricity cables?
- A.
It has a low density and is a good conductor of electricity.
- B.
It is shiny and is a good conductor of heat.
- C.
It is a good conductor of electricity and heat.
- 7.In comparison with steel, what is pure iron like?
- A.
Harder
- B.
Magnetic
- C.
Softer
- 8.Which type of steel is likely to be used for making cutlery?
- A.
Stainless steel
- B.
High carbon steel
- C.
Low carbon steel
- 9.Why are alloys likely to be harder than pure metals?
- A.
Because layers of atoms can slide over each other easily.
- B.
Because layers of atoms cannot slide over each other easily.
- C.
Because their atoms are denser and harder than those of pure metals.
- 10.What do we call the compounds that contain only carbon and hydrogen atoms?
- A.
Carbohydrates
- B.
Carbohydrogens
- C.
Hydrocarbons
- 11.Which of the following statements is true of substances with a simple molecular structure?
- A.
They have low melting points and conduct electricity.
- B.
They have low melting points and do not conduct electricity.
- C.
They have high melting points and do not conduct electricity.
- 12.Why are metals good conductors of electricity?
- A.
They contain electrons that are free to move.
- B.
They contain atoms that are free to move.
- C.
They contain ions that are free to move.
- 13.Why are hardwood timbers so called?
- A.
They are called hardwood timbers because they are hard to cut.
- B.
They are called hardwood timbers because of their cell structure.
- C.
They are called hardwood timbers because they are hard to get hold of.
- 14.What do ferrous metals contain?
- A.
Aluminium
- B.
Copper
- C.
Iron
- 15.How many times can thermoplastics be heated and shaped?
- A.
Once
- B.
Never
- C.
Many
- 16.What are composite materials made of?
- A.
A composite material is a combination of a thermoplastic materials and a suitable special agent.
- B.
A composite material is a combination of a non-ferrous materials and a suitable thermoplastic agent.
- C.
A composite material is a combination of a reinforcing materials and a suitable bonding agent.
- 17.If a material can permanently deform in all directions without cracking, it is:
- A.
Ductile
- B.
Elastic
- C.
Durable
- D.
Malleable
- 18.If a material can withstand sudden blows or shocks without breaking, it is:
- A.
Durable
- B.
Hard
- C.
Strong
- D.
Shockproof
- E.
Tough
- 19.Which of the following would not be made from stainless steel?
- A.
Knives and forks
- B.
Ball bearings
- C.
Sinks
- D.
Cooking utensils
- 20.Which of the following things would not be made from polymethyl methacrylate (acrylic)?
- A.
Plugs and sockets for electrical appliances
- B.
Display signs for shops
- C.
Headlight covers on cars
- D.
Wash basins and baths
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