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