Cmical Properties And Physical Water

Water is a chemical substance with chemical formula H2O: one molecule of water consists of two hydrogen atoms covalently bonded to one oxygen atom. Water is colorless, tasteless and not smell at standard conditions, ie at a pressure of 100 kPa (1 bar) and temperature of 273.15 K (0 ° C). These chemicals is an important solvent, which has the ability to dissolve many other chemicals, such as salts, sugars, acids, several types of gases and many kinds of organic molecules.

The situation is a liquid water is an unusual situation in a normal condition, especially with respect to the relationship between the hydride-hydride of other similar oxygen in the column on the periodic table, which suggests that water should be a gas, as hydrogen sulfide. By considering the periodic table, shows that the elements surrounding oxygen are nitrogen, flor, and phosphorus, sulfur and chlorine. All of these elements when bonded to hydrogen will produce gas at normal temperature and pressure. The reason why the hydrogen bonding with oxygen to form liquid phase b\
to state, is because oxygen is more electronegative than the other elements are (except flor). Oxygen atom pulls the bonding electrons more strongly than by hydrogen atoms, leaving the amount of positive charge on the two hydrogen atoms, and the amount of negative charge on the oxygen atom. The existence of the charge on each atom is made of water molecules have a dipole moment. Style electric attraction between water molecules due to this dipole makes each of the molecules close together, making it difficult to be separated and that ultimately raise the boiling point of water. Style attraction is called hydrogen bonding.

Water is often referred to as the universal solvent because the water dissolves many chemicals. Water is in dynamic equilibrium between liquid and solid phases under pressure and temperature standards. In the form of ions, water can be described as a hydrogen ion (H +) are associated (bonded) with a hydroxide ion (OH-).