| Electrical conductivity of copper sulphate solutions | Electrical conductivity of copper metal |
| 1. Flow of electricity takes place the molten or dissolved state. | 1. Flow of in electricity place in the solid state. |
| 2. Flow of electricity is due to the movement of ions. | 2. Flow of electricity is due to the movement of electrons. |
| 3. There is chemical decompos ition of the copper sulphate sol. | 3. There is no chemical decomposition. |
| 4. The electrical conductivity increases with the increase in temperature. | 4. The electrical conductivity with increase in temperature, decreases. |