A materials science lab is analyzing three pure chemical samples labeled P, Q, and R. The physical properties of these samples were recorded in the table below:
| Substance | Melting point (∘C^\circ\text{C}∘C) | Boiling point (∘C^\circ\text{C}∘C) | Electrical conductivity (Solid) | Electrical conductivity (Liquid) |
|---|---|---|---|---|
| P | 801 | 1413 | Does not conduct | Conducts electricity |
| Q | -182 | -161 | Does not conduct | Does not conduct |
| R | 1085 | 2562 | Conducts electricity | Conducts electricity |
Identify the type of chemical bonding present in each of the substances P, Q, and R. For each substance, explain how the provided experimental data supports your conclusion.
74 exam-style questions on OCR GCSE Chemistry Bonding. Each one has a worked solution and a mark scheme showing where the marks go.