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Mixtures Solutions Separating Mixtures

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Mixtures Solutions Separating Mixtures

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    1. Mixtures & Solutions Separating Mixtures Part 2: Separating A Salt Solution

    2. Review What is a mixture? How can a mixture be separated?

    3. Review Can you separate a mixer with a screen? With a filter? How might you separate the ingredients in a solution?

    4. Copy the Table in Your Journal

    5. Weighing Water Put two cups on the balance and zero the balance. Use a syringe to put 50 ml of water in one cup. Using the 1-g pieces, have one or more students add gram pieces until balance is achieved. Count the gram pieces. Record on your table.

    6. Make and Weigh a Salt Solution Will a solution made with 50 ml of plain water and a spoon of salt have the same mass as 50 ml of plain water?

    7. Jobs Getter 1: get the salt, 1 Basin, 2 cups Getter 2 and 3: get the equipment (1 container of water,1 craft stick, 1 syringe, 1 balance, 1 mass set) Getter 4: Will be responsible for bringing the four trays later in the experiment

    8. How Can You Determine the Number of Grams of Salt You Put in the Water to Make the Solution?

    9. You separated the gravel from the water and the powder from the water with filters. How can you separate the salt from the water? How can you get the salt back?

    14. Mixtures and Solutions Part 3: Observing Crystals What happened when the saltwater solution evaporated? What is the material in the dish?

    15. Journal Draw a picture of the salt crystal in the dish and label the drawing.

    19. Inquiry How can a solution be separated?

    21. Separating Mixtures Part 4: Separating A Dry Mixture

    22. Make a Dry Mixture Make a mixture of gravel, powder, and salt. Use a ˝ liter container and put 5 ml of each material….stir.

    23. Separating a Dry Mixture Challenge: Design a method to separate a mixture of gravel, salt and powder. Part I: a. Label a plastic cup “Dry mixture” b. Put one 5-ml spoon of salt in the cup. c. Put one 5-ml spoon of gravel in the cup. d. Put one 5-ml spoon of powder in the cup.

    24. Separating a Dry Mixture Part II: Describe your plan for separating the mixture so that the salt is in one cup, the gravel is in a second cup, and the powder is in a third cup. Write steps in your journal. After it is written, get your materials and conduct your experiment.

    25. Separating a Dry Mixture Part III: Summarize the results of your plan. Describe how you might improve your separation. Write improvements in your journal.

    26. Challenge!!! Have you designed your method? Have you separated the gravel? Have you separated the salt? Have you separated the powder?

    27. Progress Report on your groups plan for separation and the results achieved.

    28. Remove all labels from the cups. Dispose of left over solutions. Wet gravel will be saved. One group rinse the cups and put them out to dry.

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