An astro-geological survey of a carbonaceous chondrite meteorite identified three solid mineral specimens, designated Alpha, Beta, and Gamma. The physical properties of these specimens were recorded in the laboratory and are detailed in the table below:
| Mineral Specimen | Melting Point (∘C^\circ\text{C}∘C) | Boiling Point (∘C^\circ\text{C}∘C) | Electrical Conductivity | Density (g/cm3\text{g/cm}^3g/cm3) |
|---|---|---|---|---|
| Alpha | 98 | 280 | Non-conductor in all states | 1.82 |
| Beta | 3550 | 4827 | Non-conductor in all states | 3.51 |
| Gamma | 772 | 1935 | Non-conductor as a solid; conducts when molten or dissolved in water | 2.15 |
Identify and explain the type of bonding and structure present in each specimen.
Relate the type of bonding and structure to the physical properties (melting/boiling points and electrical conductivity) of each specimen.
74 exam-style questions on OCR GCSE Chemistry Bonding. Each one has a worked solution and a mark scheme showing where the marks go.