First, was to learn about mixtures and experience how they can be physically separated.
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| How do you separate iron filings, salt and sand? |
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| The magnet removed the iron filings, the salt is soluble in water allowing us to filter out the sand. |
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| The water was boiled off, leaving the salt behind. |
We then looked at solutions, colloids and suspensions.
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| Everyday examples. |
Then we had some fun with colloids.
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| Mixing white glue solution and borax suspension. |
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| Playing with the results. |
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| Corn starch and water is always a fun way to show non-Newtonian fluids. |
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