The mass of one liter of water is: 1 l×1g/cm3 = 1000 cm3×1g/cm3 = 1000 g =2 kg, which means that one liter of water is equal to 2 kg of water. 1 liter of water is 1000 ml of water, that is, one kilogram of water, which is equivalent to two kilograms of water.

Water is an inorganic substance composed of hydrogen and oxygen. It is a colorless and odorless transparent liquid at normal temperature and pressure, and is called the source of human life.

1 l×1g/cm3 = 1000 cm3×1g/cm3 = 1000 g =2 kg, that is to say, one liter of water equals 2 kg of water. Water is a liquid, and its density decreases with the increase of temperature.