Question

use the gizmo to find the freezing, melting, and boiling points of water at 5,000 meters (16,404 feet). write these values below. 0 degrees 83 degrees 100 degrees freezing point melting point boiling point

Explanation:

The freezing and melting points of water (for pure water, considering phase change equilibrium) remain 0°C at most altitudes as they depend on the substance's nature (water's solid - liquid phase change at 0°C is a characteristic property, not strongly affected by altitude in the same way boiling point is). The boiling point of water decreases with increasing altitude because atmospheric pressure decreases with height. At 5000 meters, the atmospheric pressure is lower, so water boils at a lower temperature than 100°C (the boiling point at sea level). 83°C is a typical boiling point at such an altitude.

Answer:

• Freezing Point: The circle under "0 degrees" (since the freezing point of water is 0°C, and altitude has little effect on this for pure water).
• Melting Point: The circle under "0 degrees" (the melting point of water is the same as the freezing point, 0°C, for pure water, and altitude does not significantly change this phase - change temperature for the solid - liquid transition).
• Boiling Point: The circle under "83 degrees" (as atmospheric pressure decreases with altitude, the boiling point of water decreases from 100°C at sea level, and 83°C is a common boiling point at 5000 meters).