Four unknown solids, W, X, Y
CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures
Problem
Four unknown solids, W, X, Y, and Z, were analyzed. Selected physical properties are summarized below.| Property | W | X | Y | Z |
|---|---|---|---|---|
| Melting point (°C) | 1 050 | 780 | 55 | >3 500 |
| Electrical conductivity (solid) | good | none | none | none |
| Electrical conductivity (molten or in aqueous solution) | good | high | none | none |
| Mechanical behavior | malleable | brittle | soft | extremely hard |