This week we learned more about how water is absorbed into substances, and how substances dissolve in water.
To test which substances dissolved in water, we shook common things in water, like sugar and salt...
To test objects that dissolved in water, we soaked common objects (cracker, marshmellow, rice for example) overnight in water.
We also tested the absorption rate of polymer beads! They grew from 3mm to 1 centimeter in 20 minutes...and even larger overnight!
Finally, we mixed oil and water...but they didn't mix!
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| Oil is lighter than water and repels water too... |
Next week...floating and sinking!
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