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10.3 Using materials

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Question 33

A laboratory needs a rack for carrying hot equipment. The same rack design uses 200 cm3 of material, whichever material is chosen.

The rack must:

  • have a mass no greater than 400 g
  • remain rigid at 180 °C
  • not break if dropped from 1 m
MaterialDensity in g/cm3Maximum temperature at which the material remains rigid in °CBreaks when dropped from 1 m
Borosilicate glass2.2450Yes
Aluminium alloy2.7500No
Thermosoftening polymer0.95110No
Glass-fibre composite1.7220No
a.

Calculate the maximum density a material can have for the rack to meet the mass requirement.

[2]
b.

Evaluate the four materials and choose the most suitable material for the rack.

[4]
Markscheme

10.3 Using materials Questions

  1. GCSE
  2. /Chemistry
  3. /10.3 Using materials

118 exam-style questions on AQA GCSE Chemistry 10.3 Using materials, covering 10.3.1 Corrosion and its prevention, 10.3.2 Alloys as useful materials, and 10.3.3 Ceramics, polymers and composites. Each one has a worked solution and a mark scheme showing where the marks go.

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