Rods holding molecules together ?

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SUMMARY

The rods depicted in molecular models, such as those representing water, are not physical components of the molecules themselves but serve a purely illustrative purpose. According to Kristian Hermansen, these rods symbolize the chemical bonds formed by quantized electromagnetic forces between atoms, specifically hydrogen and oxygen in water. They are designed to represent the type and length of the bond rather than being actual structures observable under a microscope. Thus, the rods function as a utility to convey the concept of molecular attraction, akin to how a model might use a rod to connect an action figure to a globe to represent gravity.

PREREQUISITES
  • Understanding of basic chemistry concepts, including atoms and molecules.
  • Familiarity with chemical bonding, specifically ionic and covalent bonds.
  • Knowledge of electromagnetic forces and their role in molecular interactions.
  • Experience with molecular modeling tools and visual representations of chemical structures.
NEXT STEPS
  • Research the principles of chemical bonding, focusing on ionic and covalent bonds.
  • Explore the role of electromagnetic forces in molecular chemistry.
  • Learn about molecular modeling software such as ChemDraw or Avogadro.
  • Investigate the visual representation techniques used in chemistry education.
USEFUL FOR

This discussion is beneficial for chemistry students, educators, molecular modelers, and anyone interested in understanding the visual representation of molecular structures and the underlying forces that hold them together.

khermans
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I was just wondering, what are the rods composed of that hold the molecules together in substances such as water? You have hydrogen and oxygen atoms, but I always see these life-size models of the molecules being held together with rods in between each atom - with no explanation of what they are! I have never really looked at this stuff under a powerful microscope, and thus only have what is on the net and in books. Can someone tell me what these rods are composed of? Or are they just for utility?

Kristian Hermansen
 
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The rods are just conventional, although they can be made to represent the type and length of the bond. The bond is the chemical bond, composed of quantized electromagnetic forces.
 
The rods in models are only there for utility as you say, and no microscope will allow you to see anything in their place. If someone made a model of you standing on the earth, he would need glue, or a rod, to connect your action figure to a globe. This rod would "be gravity". For a molecule, the rod is "what makes + attract -", or the electromotive force.
 

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