1. © Nelson Thornes Ltd 2012 1
Name ………………………………………………………. Date ………………….
Level2
Worksheet4
Chapter 4: Scientific principles
Properties of materials 2
This worksheet is for Level 2 students only.
Materials can be chosen for a variety of reasons – they may be hard, strong, ductile or
they may conduct electricity. Answer the following questions about the properties of
materials used in the mechanical services industry.
1 Which of the following statements are true and which are false?
a) Thermoplastics harden up if heated. ___________________
b) Thermo-setting plastics can be moulded. ___________________
c) PVC is commonly used for double glazing units. ___________________
d) Concrete has gravel in the mix. ___________________
e) Ductile means being able to be bent without breaking. ___________________
f) Metals only conduct heat. ___________________
g) Erosion corrosion occurs in copper water pipes. ___________________
h) A sacrificial block is often made of plastic. ___________________
2 What are the three states of water?
a) ____________________________________________________________________
b) ____________________________________________________________________
c) ____________________________________________________________________
3 Use these words to fill in the gaps in the following sentences.
higher lower increases decreases
Boyle’s law states that the higher the pressure the __________________ the volume;
the lower the pressure the __________________ the volume.
Charles’s law states that density increases with __________________ in temperature,
and decreases with __________________ in temperature.