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Home > For Teachers
> Sediment Activity - Dissolving Sediment
How is chemical sediment transported and deposited? This activity will help you discover what happens to chemical sediment.
Dissolving Sediment
What you will need: 1/2 teaspoon of salt, clear drinking glass, warm water, microwave or rangetop to boil the water.
The challenge: Find out what happens to salt in warm water: Where does it go? Why does it come back?
Try it this way: Stir ½ teaspoon of salt into warm water until the salt disappears. You can no longer see the salt, but you can taste it. The salt is dissolved in the water. Boil the water to make it evaporate, and the salt will appear again.
What happens and
why: Chemical sediment is dissolved in water while it is being transported,
just as the salt was dissolved in the water. When the water evaporates,
the sediment is precipitated (comes back out of the water, just like the
salt did) and is deposited.
- Be sure to check out our other activity dealing with sediment:
- Click here to view a complete list of activities that our site has to offer.
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This page was last updated on December 4, 2000
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