Separating Solids
Grade Level: Grade 9
Discipline: Integrated Chemistry and Physics, Filtration, Physical Properties
How do you separate a mixture that contains two solids/substances when one of them is soluble (salt) and one of them is insoluble (sand)?
For the first component of this lab, students receive a bag filled with pebbles, sand, chalk, and iron filings. Students then use a magnet and sieve cups to separate the different parts of the mixture (see first 2 pages of attached lab).
For the second component of this lab, students receive a mixture of sand and salt (they take the initial mass) and must separate the insoluble sand from the soluble salt with warm water. Students then check on their sand and salt cups each day until fully dry, where they take the masses again to find percent composition of the sand and the salt.
Learn more by downloading the lab above.
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