Water

Water

Water (H2O) is the reason we are all here today. Every living organism on our planet relies on water. Its molecular structure is extremely unique for the fact that it can dissolve many things. We are all lucky that water is the most abundant molecule on Earth's surface, composing of about 70% of the Earth's surface as liquid and solid state in addition to being found in the atmosphere as a vapor.

Familiar physical properties of water at room temperature it is a nearly colorless, tasteless, and odorless liquid. It exists on earth in forms such as a liquid, solid, and gas. Many substances dissolve in water and it is commonly referred to as the universal solvent. Because of this, water in nature and in use is rarely clean, and may have some properties different from those in the laboratory. However, there are many compounds that are not completely, insoluble in water. Water is the only common, pure substance found naturally in all three states of matter.

Water has many properties and is a large result of chemical structure. Water is the chemical substance with chemical formula H2O. One molecule of water has two hydrogen atoms covalently bonded to a single oxygen atom. When hydrogen atoms combine with oxygen, they each give away their single electron and form a covalent bond. The diagram above shows, that is one atom of oxygen bound to two atoms of hydrogen. The hydrogen atoms are "attached" to one side of the oxygen atom, resulting in a water molecule having a positive charge on the side where the hydrogen atoms are and a negative charge on the other side, where the oxygen atom is. All these water molecules attracting each other mean they tend to clump together. This is why water drops are, in fact, drops. If it wasn't for some of Earth's forces, such as gravity, a drop of water would be ball shaped -- a perfect sphere.

Water