Taking Mixtures Apart pg 11 
• How would you separate a mixture of 
marbles, corks, and nails? 
• Would a screen be useful...
Response Sheet – Separating 
Mixtures 
• Martin wrote in his science notebook: 
– Water and salt make a solution. I know t...
Focus Question: How do you 
separate a dry mixture? 
Investigation 1-3
Challenge 
• Your challenge is to design a method to 
separate this mixture of three solid 
materials so that the gravel e...
Make the Dry Mixture 
• Label one cup “Dry Mixture – Group #” 
• Add one 5-ml spoon each of: 
– Gravel 
– Powder 
– Salt 
...
Restate Challenge 
• Have you designed your method? 
• Have you separated the gravel? 
• Have you separated the powder? 
•...
Revising Separation Method 
• What worked? What didn’t? 
• How could you improve the process to 
be more complete or effic...
Homework 
• I-check 1 quiz on Thursday, 9/18 
• Quiz will cover all the mixtures 
investigations and reading from pages 
3...
Summary: Separating 
Mixtures pg 14 
• What is the difference between a liquid, 
a solution, and water? 
• What is a mixtu...
Summary: Separating 
Mixtures pg 14 
• What is the difference between a liquid, 
a solution, and water? 
• What is a mixtu...
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Mixtures 1-3 Separating a Dry Mixture

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Mixtures 1-3 Separating a Dry Mixture

  1. 1. Taking Mixtures Apart pg 11 • How would you separate a mixture of marbles, corks, and nails? • Would a screen be useful for separating a mixture of gravel and diatomaceous-earth powder? Explain. • Would filter paper be useful for separating a sugar and water solution? Explain. • Why does salt separated from a saltwater solution look different than the salt that dissolved in the water?
  2. 2. Response Sheet – Separating Mixtures • Martin wrote in his science notebook: – Water and salt make a solution. I know that because when you mix them, you can’t see the salt anymore. It can’t be a mixture because mixtures are always made of two or more solids. • Is Martin confused? Rewrite his paragraph as you think it should be written.
  3. 3. Focus Question: How do you separate a dry mixture? Investigation 1-3
  4. 4. Challenge • Your challenge is to design a method to separate this mixture of three solid materials so that the gravel ends up in a G cup, the powder in a P cup, and the salt in an S cup. • Read Separating a Dry Mixture sheets in your groups.
  5. 5. Make the Dry Mixture • Label one cup “Dry Mixture – Group #” • Add one 5-ml spoon each of: – Gravel – Powder – Salt • Stir the dry mixture • Plan how you will separate the mixture • Write a detailed plan in your Science Notebook - include materials needed and step-by-step process.
  6. 6. Restate Challenge • Have you designed your method? • Have you separated the gravel? • Have you separated the powder? • Have you separated the salt?
  7. 7. Revising Separation Method • What worked? What didn’t? • How could you improve the process to be more complete or efficient? • Rewrite the separation method based on what you now know. Write a complete, detailed plan that another group could follow to separate the three solid materials. • Clean up. Save gravel. Rinse cups. Throw papers away. Return all materials to storage area.
  8. 8. Homework • I-check 1 quiz on Thursday, 9/18 • Quiz will cover all the mixtures investigations and reading from pages 3-14.
  9. 9. Summary: Separating Mixtures pg 14 • What is the difference between a liquid, a solution, and water? • What is a mixture? • What is a solution? • Is salt water a mixture or a solution? Explain. • Describe three ways to separate a mixture.
  10. 10. Summary: Separating Mixtures pg 14 • What is the difference between a liquid, a solution, and water? • What is a mixture? • What is a solution? • Is salt water a mixture or a solution? Explain. • Describe three ways to separate a mixture.

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