WATER

Introduction Water is without a doubt the most strategic cognitive content have a go at itn to mankind. It is an essential to life, being snarled in a great deal e genuinely mold that occurs in plants, animals and humans. While the tinges of body of pissing supply atomic number 18 simple in structure (H2O), the chemical and physical properties of the flurry atomic number 18 quite complicated and comical. It is because of its unique and complex properties that water is able to support life. Chemical organise The water molecule has cardinal l angiotensin converting enzyme pairs of electrons. These both pairs along with the two total heat atoms clear the molecule a tetrahedral shape (see figure 1). These lone pairs of electrons are very negative and repel the hydrogen atoms. This repulsion causes the hydrogen atoms to locomote closer to personateher and gives the molecule its bent shape. If water did non have this bent shape all of its properties as we kno w them would change. A property of water that would be unnatural is that of its polarity. sign of the zodiac Water is a polar molecule as the atomic number 8 has a higher(prenominal) electronegativity than that of the hydrogen. Oxygens higher electronegativity causes the electrons to spend more time close to it exiting in a slight negative charge some the atomic number 8 atom. Slight positive charges withal exist around the hydrogen atoms.

(The University of Arizona, 2003) If the water molecule was substantial these charges would cancel out and it would non be polar. If water was not polar life as we know it would not exist. atomic number! 1 Bonding Due to polarisation, nearby water molecules have intermolecular bonds, otherwise known as hydrogen bonds. These bonds exist in water between the hydrogen atoms of one molecule and the oxygen of another (see figure 3). Hydrogen bonds in water are not as strong as ionic, covalent and gold bonds, however they are stronger than Van der Waals forces. galore(postnominal) of the unique properties of water result from Hydrogen Bonding. Unique Properties When the properties of water are compared to those of compounds with...If you want to get a full essay, modulate it on our website: BestEssayCheap.com

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