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LAB #10: Analysis of a Mixture
At the beginning of this experiment, you will make a mixture of several different substances. Your job in
lab today will be to separate this mixture into its different components and explain how you did it. The
mixture will contain…
Water, Salt, Sand (or another solid substance that doesn’t dissolve in water)
PRE- LAB DISCUSSION: (Create a flow chart)
1. Mix sand, salt and water together in a cup.
2. Which substance will you separate out first? ______________________
3. How will do this (explain and insert picture) ?
4. Which substances are remaining after the first separation? ____________________________
5. How would you separate the last two substances? ___________________________________
Write down some important qualitative observations (these must help you understand the experiment)
(they should be applicable to the results you obtain)
1. What is a property of sand that allowed you to separate it from the mixture?
2. What is a property of salt that made it difficult to separate from the mixture?
1. Discuss your result and evaluate your data. How successful were you in achieving the purpose
of this experiment?
2. Suggest one improvement you could make to the experiment if you were to do it again that
would minimize errors.
1. Describe the original mixture you made and state if it was heterogeneous or homogeneous? How do
you know?
2. Describe a procedure you could use to separate a DRY mixture of sugar and sand. Make sure your
answer describes a clear set of steps from start to finish.
3. Which of the following separation methods could be used to separate water and alcohol? And
what is the property that allows this?

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