Give two characteristic properties of pure water.

The two main characteristic properties of pure water are: 1. Pure water is colorless, odorless, and tasteless. 2. Pure water boils at 100°C and freezes at 0°C under normal atmospheric pressure.

Property 1: Colorless, Odorless, Tasteless

Pure water has no color, no smell, and no taste. Any taste or smell in water comes from impurities or dissolved minerals.

Property 2: Fixed Boiling and Freezing Point

• Pure water boils at 100°C (at 1 atm pressure).
• It freezes at 0°C (at 1 atm pressure).
• These fixed points are used as standards in temperature measurement.

Other Important Properties

• Pure water is a universal solvent, dissolving many substances.
• It has a neutral pH of 7 at 25°C.
• It is a poor conductor of electricity unless impurities are present.

Significance

• Essential for life processes.
• Used as a standard in laboratories.
• Helps identify whether water is pure or contaminated.