Tap water conducts electricity whereas distilled water does not. Why ?

Explanation

### Step-by-Step Solution:

1. **Understanding Conductivity**: Conductivity in liquids is primarily due to the presence of ions. Ions are charged particles that can move freely and carry electric current.

2. **Composition of Tap Water**: Tap water contains various dissolved salts and minerals. These substances dissociate into ions when dissolved in water. For example, common salts like sodium chloride (NaCl) dissociate into sodium ions (Na⁺) and chloride ions (Cl⁻).

3. **Presence of Ions in Tap Water**: Because of these dissolved salts and minerals, tap water has a significant number of free ions. These ions are responsible for conducting electricity. When a voltage is applied, these ions move towards the electrodes, allowing electric current to flow.

...