This are the results of the research that the students of B' class did for the water and its use. The research was made during the lesson of technology for our participation on the comenius project "Be globally aware"

1. THE WATER

2. THE DEFINITION Water is the most widespread chemical compound which is necessary for all known forms in our planet. The molecule of water is consists of two atoms of hydrogen and one atom of oxygen , the chemical substance of water's molecule is proved by the french chemist Antoine L a voisier .

3. PHYSICAL CONDITIONS OF WATER I n nature the water exists in three states The solid state (below 0 C.) The liquid state (between 0-100 C.) And the last one, the gaseous state (about 100 C.)

4. THE NAME The water in Greek “nero” got its name from the byzantine phrase “νεαρό ύδωρ” “nearo ydor”(= young water) which means flowing water. This phrase comes from the ancient greek phrase “ νήρον ύδωρ” “nyron ydor”

7. The water of the earth can change states , from solid, such as ice  To liquid, such as the water on lakes and rivers  And to gas, such as the water steams. 

9. THE WATER CYCLE NEVER STOPS.. That’s why everybody should take care of the environment and keep it clean

10. Water purification

19. Domestic wastewater is collected and transported via a network of pipes to a municipal treatment plant, in the island of Psitalia, where a two stage treatment take place.