[stevekim8]

hi i'm doing bonding project at school. it's making children's book with explaining all these chemistry stuffs
my topic for book is "SpongeBob". so far, i finished doing solubility, emulsions, and bending liquids. i need to do diffusion, shape and polarity, intermolecular force.

i have few questions i want to ask.
1. in general, what is intermolecular force? what is the difference between dipole and dispersion forces? what would be some examples of them to put in my book?
2. how would i explain spongebob way of diffusion? details at the molecular level?
3. how can something be nonpolar but have polar bonds?

thank you ^^ appreciate for your help

[Bakegaku]

like a few after me will probably suggest, try using Google or Wikipedia, then come here if you have a specific question you can't find.

As for how Spongebob can be used to explain diffusion... Well he's a sponge, so he could somehow absorb some chemical that diffuses into the water around him over time... Good luck with explaining the more advanced intermolecular bonding topics, thoughl.

[mike]

3. A molcule may have symmetry. It may contain polar bonds within its structure however the polarity of one bond may be overall cancelled out by the opposite polarity of another bond in the same molecule.

[constant thinker]

3. A molcule may have symmetry. It may contain polar bonds within its structure however the polarity of one bond may be overall cancelled out by the opposite polarity of another bond in the same molecule.

A good example of this is CO₂. The bonds are polar of the difference in electronegativity, but because of the symmetry in the arrangement of the 2 oxygen atoms with carbon in the center; it is not a polar compound.

[Edit] If you want to see the structure of carbon dioxide, look at the wikipedia article.
http://en.wikipedia.org/wiki/Carbon_dioxide