Quelpr
2 marksNon-Metals

CSEC Chemistry · May/June 2008 · Paper 2 · Question 6(b)(iv)

Glass is a non-crystalline solid that melts over a wide temperature range, primarily composed of silicates (SiO₂). The chemical bonds within the SiO₂ tetrahedron vary in strength.

Glass is now widely used as a construction material in buildings. State ONE advantage and ONE disadvantage of using glass in this way.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 6(a)(i)State TWO benefits of adding sodium carbonate or calcium carbonate to silica in the manufacture of glass.[2 marks]
  2. 6(a)(ii)State how the basic components of glass are modified to produce lead-potassium glass borosilicate glass.[4 marks]
  3. 6(b)(i)Why is it important that glass does NOT crystallize as it cools?[2 marks]
  4. 6(b)(ii)Suggest how the bonding in SiO₂ affects what happens when glass melts. Explain why this is important for blowing and moulding glass.[3 marks]
  5. 6(b)(iii)Although no scarce and vital raw material is used in the manufacture of glass, recycling of glass is strongly recommended. Suggest TWO reasons for this.[2 marks]

More practice: the rest of this paper · more Non-Metals questions · all CSEC Chemistry past papers