Why does water have a melting point?

Answer 1

When a compound is heated, the vapor pressure increases as the molecules escape the solid form and exert pressure on the surroundings. When the vapor pressure reaches the threshold pressure of the surroundings, then the heat of fusion is needed to convert it all the gas, and the process of this heat converting the molecules is observed as the range from when it begins and when the process ends.

Answer 2

A melting point is the temperature that a substance changes from a solid to a liquid. Water changes from ice(solid) to water(liquid) at 32 degrees Fahrenheit or 0 degrees Celsius therefore water has a melting point.

Answer 3

Substances may contain more elements than the other substance, meaning that it would take more energy (heat) to break the bonds of the substance as opposed to the other substance. Because these bonds must break in order to change phases, it would take more energy to dismantle the larger substance. Another thing that affects melting points is the types of bonds that connects the atoms to each other. Double bonds take more energy to break than single bonds. Triple bonds take more energy than double bonds so that could also account for the differences in melting points between two substances.

Answer 4

Water has a melting point because it is a substance that exists in different states of matter based on temperature. At the melting point, water transitions from a solid (ice) to a liquid form. This change is due to the weakening of the bonds between water molecules as heat is applied.

Answer 5

Melting point is a specific and unique temperature for a material; melting range is an interval of temperature.