As they are both ice then neither. They are already in that state of matter.
Cold water. It doesn't have to cool as much as hot water does, thus it freezes faster. Under VERY specific labratory conditions, it can be made possible to have warmer water freeze faster, however, these conditions will not be present when you fill your ice tray. If you want ice, use cold water.
I believe hot water freezes faster because it is supercooled. Cold water is non-supercooled. When cold water freezes ice crystals form and float to the top, forming a layer of ice over the top of the water, so the layer of ice stops evaporation . While the hot water, which is probably no longer hot in the freezer,when it does freeze, it freezes throughout, creating more or less of a slush before freezing solid.
The process of water freezing into ice involves the temperature of water being lowered to 32 degrees Celsius. Hot water will take longer to freeze because the difference between the temperature of hot water and 32 degrees is greater than the temperature of cold water and 32 degrees.
Cold water will freeze faster. Because the freezing point of water is 0oC, water that is closer to that point will freeze faster then hot water. This is because it will require less time to lower the temperature to the freezing point.
Hot
No, hot water should not be used to make an ice rink. Cold water freezes faster and results in a smoother ice surface. Hot water can also create weak spots in the ice, making it less safe for skating.
It melts faster in cold
If you mean a product like Icy Hot for sore muscles, two chemicals react in the wrap to produce warmth or heat.
Water expands when it freezes and becomes ice.
Salt water freezes before plain water because the presence of salt lowers the freezing point of the water. Cold water will freeze faster than hot water because the molecules in the cold water have less kinetic energy and are more likely to form solid ice structures.
the freezer or the climate in the air. if it snows the snow freezes and it turns into ice
An ice cube will melt faster in hot water compared to cold water or by itself. The higher temperature of the hot water transfers more heat energy to the ice cube, causing it to melt at a quicker rate.