Why won't M&M sweets dissolve in oil?

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Elena

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Why won't M&M sweets dissolve in oil?
« on: 28/02/2011 21:30:03 »
Elena asked the Naked Scientists:
   
Why won't M&Ms dissolve in oil?

What do you think?
« Last Edit: 28/02/2011 21:30:03 by _system »

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Offline chris

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Why won't M&M sweets dissolve in oil?
« Reply #1 on: 01/03/2011 18:27:31 »
M and Ms contain oil-rich chocolate, which will partition (at least in part) with oil, but the outermost part of the sweet is a sugar-based shell. This is hydrophilic (water loving) and hence will not interact well with non-polar substances like oils. Hence the oil cannot break apart the sugar coat and hence the M&M remains intact.

Chris
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