It is good that ice floats on water because plants and fish can survive in water that is covered by the floating ice sheet. Water in its solid state becomes less dense than in its liquid state, unlike other matter types, due to its hydrogen bonding.
In the winter, the air gets cooler initially, then the lake water gradually cools from top to bottom. When the lake water reaches 4 degrees Celsius, it attains maximum density. When the temperature of the top of the lake starts falling below 4 C, it turns into ice that floats and serves as an insulator for the water underneath. As the water underneath remains at 4 C at maximum density, it becomes congenial for the survival of the organisms.Learn More
Ice floats in water because it less dense than water thanks to a special kind of chemical bonding known as hydrogen bonding. Typically solids are denser than liquids of the same substance, such as solid lead, but that is not the case with water and ice.Full Answer >
The hydrogen bonding gives water a structure with considerable space between the molecules, making it expand in size and become less dense in a solid state than in a liquid one. Because water is denser than ice, ice cubes float on the surface of water. Hydrogen bonds link each water molecule to an average of 3.4 other water molecules, and the lattice that forms when water freezes has a lot of empty space inside it.Full Answer >
In general, if ice and water have the same volume, then the ice weighs less. This is because ice is less dense than water and occupies more space. Therefore, a gallon of ice weighs less than a gallon of water.Full Answer >
Chemists at the University of Utah discovered that ice forms at temperatures as low as minus 55 degrees Fahrenheit, according to a Science Daily article. Prior to this discovery, scientists believed ice formed exclusively at 32 degrees Fahrenheit.Full Answer >