What is a Molecular Substance and How Does it Differ from an Element?

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Discussion Overview

The discussion revolves around the definition of a molecular substance and its distinction from elements. Participants explore the characteristics of molecules, particularly in relation to single atoms and groups of atoms, and reference various definitions to clarify their understanding.

Discussion Character

  • Homework-related
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant suggests that a molecular substance consists of identical molecules, using C4 as an example of a molecular substance, while arguing that a single carbon atom is not a molecule.
  • Another participant counters that a molecule can consist of a single atom, asserting that four carbon atoms linked together form a molecule.
  • A different participant agrees that four linked carbon atoms constitute a molecule but emphasizes that a single carbon atom does not qualify as a molecule due to its status as a single atom.
  • A reference to Webster's definition of a molecule is provided, noting that it can consist of one or more like atoms in an element.
  • One participant expresses surprise at the implications of the definitions, questioning whether solid sodium (Na) and helium gas (He) could also be classified as molecules based on the definitions discussed.
  • Another participant raises uncertainty about how to classify solid sodium due to its metallic bonding, while affirming that helium gas is indeed a molecule.

Areas of Agreement / Disagreement

Participants exhibit disagreement regarding the classification of single atoms as molecules, with some asserting that they are not, while others argue that they can be. The discussion remains unresolved with multiple competing views on the definitions and classifications of molecular substances.

Contextual Notes

Participants reference various definitions of molecules, highlighting differences in interpretation. There is uncertainty regarding the classification of certain elements, particularly metals and noble gases, and how their bonding affects their status as molecules.

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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?


Homework Equations





The Attempt at a Solution

 
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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".
 
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?
 
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.
 
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" : 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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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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