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Science

DetlefK

(16,670 posts)

7. Salt, to show how solids dissolve in liquid.

Reply to Victor_c3 (Original post)

Tue Apr 16, 2013, 08:40 AM

Apr 2013

1. The water can only dissolve this much salt, the rest will fall out. Hot water can dissolve more than cold water.
2. Once the water has dried away, the salt returns.

A fine weight scale (resolution of single grams) would also be good.

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Highlight:

Chemistry play idea for preschoolers [View all] Victor_c3 Apr 2013 OP

Well, be a little wary of baking soda and vinegar Warpy Apr 2013 #1

Thanks Victor_c3 Apr 2013 #4

Not really chemical, but wet corn starch is super fun to play with. tridim Apr 2013 #2

Have them make "GAK" immoderate Apr 2013 #3

Cross post mzteris Apr 2013 #5

Cornstarch & water to make a non-Newtonian fluid sakabatou Apr 2013 #6

Great idea, keep 'em coming! n/t Victor_c3 Apr 2013 #8

Salt, to show how solids dissolve in liquid. DetlefK Apr 2013 #7

Another good idea Victor_c3 Apr 2013 #9

Young minds can be melded easily. DetlefK Apr 2013 #10

Cesium in water! sir pball Apr 2013 #11

Supersaturated sugar/salt solutions in a freezer. TheMadMonk Apr 2013 #12