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Lesson Objectives

Lesson Objectives . Students will be able to explain that mixtures are a combination of two or more materials that retain their own properties. They will also be able to identify mixtures.

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Lesson Objectives

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  1. Lesson Objectives • Students will be able to explain that mixtures are a combination of two or more materials that retain their own properties. They will also be able to identify mixtures. • Students will be able to explain that a solution occurs when something is dissolved in a solvent and the two cannot be separated with a filter. They will also be able to identify solutions.

  2. Test #1: Gravel Q: Who’s in charge? A: The Gravel Genius! • Step 1:CAREFULLY measure 50mL of water using the syringe. • Step 2: Slowly squirt the water into the cup containing gravel (marked “G”) • Step 3: Use the popsicle stick to stir the contents of the cup. • Step 4: Write down your observations of what you see in the cup. • Step 5: After the water and solid are evenly dispersed, the group leader will pour the contents of the cup through a screen and into an empty plastic cup marked “G” • Did the solid separate from the water using the screen? • YES: there is no further testing required for that material. • NO: Use the filter and funnel to try and separate the two. • While the designated group member is taking their turn creating and separating the mixtures, the other two group members will record their observations on the student lab worksheet.

  3. Test #2: Powder Q: Who’s in charge? A: The Powder Pro! • Step 1:CAREFULLY measure 50mL of water using the syringe. • Step 2: Slowly squirt the water into the cup containing gravel (marked “P”) • Step 3: Use the popsicle stick to stir the contents of the cup. • Step 4: Write down your observations of what you see in the cup. • Step 5: After the water and solid are evenly dispersed, the group leader will pour the contents of the cup through a screen and into an empty plastic cup marked “P” • Did the solid separate from the water using the screen? • YES: there is no further testing required for that material. • NO: Use the filter and funnel to try and separate the two. • While the designated group member is taking their turn creating and separating the mixtures, the other two group members will record their observations on the student lab worksheet.

  4. Test #3: Salt Q: Who’s in charge? A: The Salt Specialist! • Step 1:CAREFULLY measure 50mL of water using the syringe. • Step 2: Slowly squirt the water into the cup containing gravel (marked “S”) • Step 3: Use the popsicle stick to stir the contents of the cup. • Step 4: Write down your observations of what you see in the cup. • Step 5: After the water and solid are evenly dispersed, the group leader will pour the contents of the cup through a screen and into an empty plastic cup marked “S” • Did the solid separate from the water using the screen? • YES: there is no further testing required for that material. • NO: Use the filter and funnel to try and separate the two. • While the designated group member is taking their turn creating and separating the mixtures, the other two group members will record their observations on the student lab worksheet.

  5. Exit Tickets On the back of your lab worksheets, please answer the following questions: • What is the difference between a mixture and a solution? Explain using examples from your experiments. • Give an example of a mixture. • Give an example of a solution.

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