What is that
in my water?
Created by:
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Science and Technology
Cycle 1 year 2
For:
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Due Date:
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Heritage regional High School
Situation:
On the Friday before a long weekend, you and your science class are brought to the McGill University science labs for a visit. The McGill science building is fascinating and you spend a lot of time looking at the displays.
At 4:00pm, the class is instructed to return to the buses for the trip back to school. Unfortunately you don’t hear the announcement andyou find yourself locked in the lab, alone for the entire weekend.
Food is not your main worry,since you know that you can easily survive for many days without eating. The main problem you will face is dehydration and so you attempt to find water.
After searching through the entire lab, you are only able to find one container which islabelled:
Copper Sulfate + Sodium bicarbonate+ H2O+ Magnesium carbonate+
Sand.
Remembering what you learned in your science classes on separation methods, you search the lab to find the necessary equipment which will enable you to remove the solute from the mixture to eventually get potable water.
Luckily you are able to find everything you need to perform each of the separation methods. Placing the material in front of you; you must now proceed to separate the mixture methodically using one separation method at a time and in the proper order.
Guideline:
1)Separate the mixture in order to be able to collect each of the solutes (separately) as well as the solvent.
2)Each separation method can only be used 1 time.
3)Use each method in the proper order to separate each of the solutes.
4)Complete your report
5)Show your results to your teacher.
Problem:
How can I make the mixture of Copper Sulfate, sodium bicarbonate, H2O, magnesium carbonate and sand, potable?
Hypothesis:
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Material:
- Mixture (Copper Sulfate + Sodium bicarbonate+ H2O + Magnesium carbonate+ Sand)
- 2 Beakers (100 mL)
- Beaker (150 mL)
- Stirring rod
- Filter paper
- Funnel
- Clamp
- Hot plate
- Universal stand
- 2 Erlenmyer flask (250 mL)
- Tubing
- Condensing tube
- Hot paws
- Coolant
Procedure:
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Results: (observations)
- Make sure you list your results following each of the 3 separation methods
- Describe both the solute and remaining mixture.
After 1st separation method:
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After 2nd separation method:
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After 3rd separation method:
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Conclusion:
1)Is your final product potable?______
2) Why or why not?
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3)What could you have done in order purify the water even further?
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