Question

water has a melting point of 32^{0}f (0^{0}c) and a boiling point of 212^{0}f (100^{0}c).
sodium chloride, more commonly known as table salt, has a melting point of 1474^{0}f (801^{0}c) and a boiling point of 2669^{0}f (1465^{0}c).

select the statement(s) that describe the melting and boiling points as a property of water and salt.

water has a melting point that can be seen in nature.

the melting point of salt is higher than that of water.

salt would not melt or boil in nature on earths surface.

Explanation:

• Water's melting point (\(0^{\circ}C\)) is commonly observed in nature (e.g., ice melting).
• Melting point of water is \(0^{\circ}C\) and of salt is \(801^{\circ}C\), so salt's melting point is higher.
• Earth's surface temperatures are much lower than salt's melting (\(801^{\circ}C\)) and boiling (\(1465^{\circ}C\)) points, so it won't melt/boil naturally.

Answer:

All the statements (Water has a melting point that can be seen in nature; The melting point of salt is higher than that of water; Salt would not melt or boil in nature on Earth's surface) are correct.