This results in the hydrogen atoms aquiring a positive charge and the oxygen atom a negative one. Since opposite charges attract each other, the negatively charged oxygen atom can now loosely attach itself to a positively charged hydrogen atom in another water molecule. A hydrogen bond has arisen between the two molecules. Because each water molecule has two hydrogen atoms, it can bind to two other water molecules. In this way the complex network of loosely bound water molecules can arise, which is the main reason for the peculiar properties of water, snow and ice.
Ice is formed when water freezes, the liquid turns into a solid material.
But not completely. Remaining on the ice surface is a layer of water molecules that refused to become part of the rigid structure of the ice crystal. Instead, these water molecules behave almost like a liquid. The thickness of this layer depends on the temperature. It is this liquid layer that makes the ice slippery.