A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Why does cold water seem more fresh than hot water?

Best Answers

Dissolved oxygen is one of the best indicators of water quality. Dissolved oxygen is the amount of oxygen (O2) dissolved in the water. The amount of dissolved oxygen that the water can hold depends on the temperature and salinity of the water. read more

Cold water can hold more dissolved oxygen than warm water and fresh water can hold more dissolved oxygen than salt water. So the warmer and saltier the water, the less dissolved oxygen there can be. The maximum amount of dissolved oxygen that the water can hold is called the saturation value. read more

Cold water is always more dense than warm water; the density change amounts to about 4 tenths of one percent between near-freezing and 30 degrees Celsius (86 degrees Fahrenheit). Although small, the difference allows warm water to "float" on top of cold water, a phenomenon that occurs every day in the world's oceans. read more

Water from the cold tap getting warmer instead of cooler if you let it run seems odd, unless your cold water pipes are in contact with hot water pipes, or unless you have a long run of pipe, either under your own property or from the city, that is buried too shallow and picking up heat from the ground, heated by the sun. read more

Encyclopedia Research

Wikipedia: