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Not understanding definition

  • Thread starter Miike012
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  • #1
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Homework Statement


Molecular Substance... Is a substance that has molecules, all of which are the same....

im guessing it means... C sub4 is a molecular substance but if it was just Carbon itself ... it would not be a molecular substance because it is just an element and not a molecule... is this correct?


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Answers and Replies

  • #2
HallsofIvy
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No, a molecule can consist of a single atom. And 4 Carbon atoms linked as a single group would certainly be a "molecule".
 
  • #3
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I understand that if 4 carbons are linked together is a molecule However if it is just One carbon atom therefore because it is just a single atom and not a group of atoms chemically bonded that means it is not a molecule... is this correct?
 
  • #4
Borek
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Webster: (molecule is) the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.
 
  • #5
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Wow, my world has been shattered a little... (not really) My understanding had always been like the first sentence on Wikipedia's article on http://en.wikipedia.org/wiki/Molecule" [Broken]: A molecule is defined as a group of at least two atoms in a definite arrangement held together by covalent chemical bonds.

So by Webster's definition, could Na(s) and He(g) also be considered molecules?
 
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  • #6
Borek
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Read fine print in wikipedia.

I am not sure how to treat solid Na - it is a metal, so there is a metallic bond involved. He(g) is a molecule.
 

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