Cao Yang Eric (2)

Dihydrogen Monoxide
Symbol: H2O
Dihydrogen Monoxide contains 2 atoms of hydrogen and 1 atom of  oxygen.
Chemical Bond
It is a convalent bond.

Harmful Effects
Dihydrogen monoxide:
• is also known as hydroxl acid and is the major component of acid rain. 
• contributes to the "greenhouse effect." 
• may cause severe burns. 
• contributes to the erosion of our natural landscape. 
• accelerates corrosion and rusting of many metals. 
• may cause electrical failures and decreased effectiveness of automobile brakes. 
• has been found in excised tumors of terminal cancer patients. 

Constituent Elements
Hydrogen:
Symbol: H
Atomic Number: 1
Hydrogen is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weightof 1.00794 u (1.007825 u for Hydrogen-1), hydrogen is the lightest and most abundant chemical element, constituting roughly 75 % of the Universe's chemical elemental mass. Stars in the main sequence are mainly composed of hydrogen in its plasma state. Naturally occurring elemental hydrogen is relatively rare on Earth.

Oxygen:
Symbol: O
Atomic Number: 8
Oxygen is the element with atomic number 8 and represented by the symbol O. Its name derives from the Greek roots.It was mistakenly thought that all acids required oxygen in their composition. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless, odorless, tasteless diatomic gas with the formula O₂.