Answer: A. Water
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    Which of these substances is not an element?A. WaterB. Hydrogen C. Aluminum D. Iron  Scientific process assignment             
Sat Mar 10 2001 13:30:00 GMT-0500 (Eastern Standard Time)  · The halogens (/ ˈ h æ l ə dʒ ə n  ˈ h eɪ- -l oʊ- -ˌ dʒ ɛ n /) are a  group in the periodic table consisting of five chemically related  elements : fluorine (F)  chlorine (Cl)  bromine (Br)  iodine (I)  and astatine (At).  The artificially created  element  117  tennessine (Ts)  may also be a halogen. In the modern IUPAC  nomenclature  this group is known as group 17.. The name "halogen ...        
Tue Jun 25 2002 14:30:00 GMT-0400 (Eastern Daylight Time)  · Chemical nature Organic chemistry. In organic chemistry  a hydrate is a  compound formed by the hydration  i.e. "Addition of  water  or of the  elements  of  water  (i.e. H and OH) to a molecular entity". For example: ethanol  CH 3 −CH 2  −OH  is the product of the hydration reaction of ethene  CH 2 =CH 2  formed  by the addition of H to one  C  and OH to the other  C   and so can be considered as the ...  
Aluminium - Wikipedia             
Abundance of the chemical elements - Wikipedia             
Chemical element - Wikipedia             
Chemical element - Wikipedia             
In thermodynamics  the specific heat capacity (symbol  c  p) of a  substance  is the heat capacity of a sample of the  substance  divided by the mass of the sample. Informally  it is the amount of energy  that must be added  in the form of heat  to one unit of mass of the  substance  in order to cause an increase of one unit in temperature.The SI unit of  specific heat is joule per kelvin and kilogram ...     
Sun Oct 07 2001 14:30:00 GMT-0400 (Eastern Daylight Time)  · In chemistry  an  element  is a pure  substance  consisting only of atoms that all have the same numbers of protons in  the...
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