Yes, water is unique in that it is the only substance that expands when frozen. Therefore ice will be less dense in terms of water molecules than room temperature water or heated water
Hot water is less denser than cold water and has a greater temperature.
Hot water is less denser than cold water and has a greater temperature.
You are wrong ! - Cold water is heavier ( denser ) than hot water.
NO, it is the opposite. remember molecules expand when heated
cold water is denser than hot water. The same is true of most other substances as well.
Cold water
If your hot water pipes are frozen, you may notice a lack of hot water coming out of the faucets. You can check for frozen pipes by feeling the pipes for cold spots or listening for unusual sounds when you turn on the hot water. If you suspect your hot water pipes are frozen, it's important to take action to thaw them to prevent damage.
Hot water can freeze faster than cold water due to a phenomenon called the Mpemba effect. This effect occurs because hot water can evaporate more quickly, losing some of its volume and cooling faster. Additionally, hot water may have fewer dissolved gases, which can also aid in faster freezing.
Mars is hot so frozen water can melt in Mars.
The difference in water density (hot-cold) is very small, compared to the difference in density between water of any temperature, and your body. That is, even hot water is more dense that we are, so we still float.
When cold water is poured into hot water, it sinks because it is denser than the hot water. The cold water is heavier due to the molecules being closer together at a lower temperature, causing it to sink to the bottom. The hot water, which is less dense, rises to the top.
No, hot air is less dense than cold air.