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MomDavis
MomDavis asks:
Q:

where do I purchase rock salt for the Frosty experiment?  Or what is the substitute?

In Topics: Science fair
> 60 days ago

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kat_eden
kat_eden , Parent writes:
Hi MomDavis - Rock salt is available at most grocery stores in the baking goods aisle.  There's not really a great substitute.  Hope you can find it!

Kat
> 60 days ago

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chemteacher
chemteacher writes:
You can also find rock salt at Target and possibly WalMart. I have also used the driveway ice melt salt from a home supply store (Home Depot, Lowe's, etc). The point is to lower the freezing point of the ice by using salt. Table salt works, just not as well and you need to use a lot of it.
> 60 days ago

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