Asked by Marcia
I want to introduce the concept of soluble and insoluble to my preschoolers ages 3 and 4 ...
What experiment could I do with them so give them a better understand of items or materials that are soluble and insoluble?
What experiment could I do with them so give them a better understand of items or materials that are soluble and insoluble?
Answers
Answered by
Dr Russ
This works quite well with rock salt (so big lumps) and water to demonstrate soluble and say un-cooked coarse ground rice or a small grained rice to demonstrate insoluble. They can taste a little of the salty solution to see it is saltly.
Then have a mixture of the two, pour into water and stir for a few minutes. Use a sieve to filter and recover the rice. Then allow them to taste the liquid (filtrate) which is salty. You can also demonstrate that you can recover the salt by allowing a small amount of the solution to evaporate overnight.
Then have a mixture of the two, pour into water and stir for a few minutes. Use a sieve to filter and recover the rice. Then allow them to taste the liquid (filtrate) which is salty. You can also demonstrate that you can recover the salt by allowing a small amount of the solution to evaporate overnight.
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