WJEC A Level Chemistry
WJEC A Level Chemistry 1.5 Solid Structures Exam Questions
Free WJEC A Level Chemistry exam questions on 1.5 Solid Structures, with mark schemes. Covers giant ionic, giant covalent, metallic and simple molecular structures and their properties.
1.5 Solid Structures exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
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WJEC A Level Chemistry Flashcards (Anki & Quizlet)
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Use them on Anki or Quizlet, then test yourself with the questions on this page.
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About WJEC A Level Chemistry 1.5 Solid Structures
This topic links structure to physical properties. Expect comparisons of melting points and conductivity.
What you need to know
- Giant ionic Lattices such as NaCl and CsCl, high melting points, conduct when molten or dissolved.
- Giant covalent Diamond, graphite and silicon dioxide with very high melting points.
- Metallic Positive ions in a sea of delocalised electrons, conducting and malleable.
- Simple molecular Weak intermolecular forces give low melting points, such as iodine and ice.
Common mistakes in 1.5 Solid Structures
- Saying ionic solids conduct.
- Saying covalent bonds break when simple molecules melt.
- Confusing graphite and diamond conductivity.
Try three 1.5 Solid Structures exam-style questions
1. Explain why graphite conducts electricity. (2 marks)
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Each carbon forms three bonds (1), leaving delocalised electrons that move between layers (1).
2. Explain why NaCl has a high melting point. (2 marks)
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Strong electrostatic attraction between oppositely charged ions (1) requires lots of energy to overcome (1).
3. State the coordination number of Na⁺ in NaCl. (1 mark)
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6.
1.5 Solid Structures FAQs
What does Solid Structures cover?
The structures and properties of ionic, covalent, metallic and molecular solids.
Why does ice float?
Hydrogen bonds hold molecules in an open lattice that is less dense than liquid water.
Do I need lattice diagrams?
Yes, for NaCl, CsCl, diamond and graphite.
Revise this topic with flashcards: WJEC A Level Chemistry Flashcards, with mark scheme answers for Anki and Quizlet.
