ConceptConceptDocsDocuments

CAIE IGCSE Chemistry Giant Covalent Silicon Dioxide

Practise identifying silicon dioxide as a giant covalent structure and interpreting its atomic network, bonding and contrast with molecular carbon dioxide.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • identify silicon dioxide as a giant covalent or macromolecular structure, not a molecule
  • state that each silicon atom bonds to four oxygen atoms within a continuous covalent network
  • contrast giant silicon dioxide with simple molecular carbon dioxide using structure and state data

2.6.3—Giant covalent structure of question 1

[Maximum number: 1]

The symbols of the elements of Period 3 of the Periodic Table are shown.

Table for Question 2.6.3—Giant covalent structure of question 1 — CAIE IGCSE Chemistry

Answer the following questions about these elements.
Each element may be used once, more than once or not at all.
Write the symbol of an element which:

forms an oxide with a macromolecular structure

All question bank results loaded