water
Water is one of the essential elements in life and is one of the famous chemical compounds. It is a transparent liquid produced by the union of an atom of oxygen and two atoms of hydrogen and its chemical form is written in the form of H 2 O, and is available at 71% on the surface of the earth distributed between rivers, oceans, seas, lakes, rain, underground wells, ponds, ice and steam.
Water life cycle
The cycle of water life is in several stages: the stage of purification. The water is evaporated by the heat of the sun, climbs into the air, moves the clouds through the air currents, the second stage is the water fall on the earth surface in the form of rain, Water on the ground through the friction with various elements of the globe.
Benefits of Water
The benefits of water are summarized as follows:
- Is a major source of drinking.
- Used in industry such as papermaking.
- It maintains the temperature in the earth and is used to generate and produce energy such as electricity through running water.
- Is a very important element in the agriculture sector as plants need plenty of water.
- It helps digestion, transfers oxygen between blood and cells, relieves tiredness and fatigue, treats constipation, removes excess salts from the body, reduces stress and stress, improves body function, improves mood, treats headaches, Metabolism is known as metabolism.
- A means of transport, where some people rely on their movements on water through ships and boats, and water is used in entertainment through the race of ships and boats.
- Water has a very important role in the emergence of ancient civilizations. It has built water around the water bodies and has settled around it and built its cities and villages.
Characteristics of water
- Physical properties of water:
- It has no color, no smell, no taste.
- There are three liquid, solid and gaseous states.
- The molecules of water hold together tightly, because they contain chemical bonds and hydrogen bonds, increasing surface tension and taking droplets of Korea on the surface of water and airborne substances.
- The ability to move from a low salinity medium to a high salinity medium, and also the ability to switch from one case to another.
- The water density decreases when it freezes and increases in size, which is known as water anomaly.
- Chemical properties of water:
- Interaction with all materials.
- It is a solvent for most materials where soluble matter molecules are distributed in the solution uniformly.