Problem
Problem
The physical properties of five solids labelled A, B, C, D and E are summarized below. The substances are: an ionic compound, a non-polar molecular solid, a metal, a polar molecular solid, and a covalent network substance. Classify each correctly.| Sample | Solubility in water | Conductivity of solution | Conductivity of solid | Relative melting point |
|---|---|---|---|---|
| A | insoluble | – | yes | third to melt |
| B | insoluble | – | no | highest |
| C | soluble | no | no | second to melt |
| D | insoluble | – | no | lowest |
| E | soluble | yes | no | fourth to melt |