UTF-8Salt102255102This model will show some behavior typical of a salt. When left alone, the salt forms a solid like the salt we eat.
Watch the model below but make sure the temerature is turned down first!
The salt forms an ionic bond because the ions in the salt have unbalanced charges that pull at each other.
If we leave the salt alone, it will probably stay in the same solid shape longer than we care to study it.
However, we know that if we put salt in water that the salt will dissolve into the water. This breaks up its solid
shape, why does this happen? The model below will help us figure it out.
In this model we have our same block of solid salt but instead of being left alone, it is surrounded by water molecules!
Look closely at the interactions between the salt ions and the water and see if you can gain any insight into why the salt
dissolves in the water.
The entropy of the system is increasing because as the water molecules break apart the solid salt,
the atoms of the salt become more and more mixed in with the water molecules and less and less ordered.60.060.060.060.060.0org.concord.mw2d.activity.AtomContainerUntitled$0.mml60.060.060.060.060.0org.concord.modeler.PageMultipleChoicetrue4400200<html>
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What kind of bonds hold the atoms in the salt together?
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trueCovalentIonicMetallicHydrogen Bonds1-7f7f8060.060.060.060.060.060.060.060.060.060.060.060.060.060.0org.concord.mw2d.activity.AtomContainerUntitled$1.mml60.060.0org.concord.modeler.PageTextArea400200<html>
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Describe how the water molecules interact with the atoms in the salt. Does
this explain why the salt dissolves?
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If we consider the salt block to be our system, what is happening to the
entropy?
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trueThe entropy of the system is increasingThe entropy of the system is decreasingThe entropy of the system is not changingThe entropy of the AND the surroundings is not changing0-7f7f8060.060.060.0