Grade 7 Mixtures

11 Questions
7th Grade Quizzes & Trivia

Grade 7 mixtures

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Questions and Answers
  • 1. 
    • A. 

      A pure substancae

    • B. 

      Two or more substances mixed together

  • 2. 
    Mixtures can be classified into 2 types, homogeneous and heterogenous.  They are different because
    • A. 

      Heterogenous has 2 substances. Homogenous has 3 or more substances

    • B. 

      Homogeneous looks the same throughout, with heterogenous you can see the different parts

    • C. 

      Heterogeneous looks the same throughout, with homogeneous you can see the different parts

    • D. 

      They are the same, just different names

  • 3. 
    • A. 

      Solution

    • B. 

      Solvent

    • C. 

      Solute

    • D. 

      Saline

  • 4. 
    To separate a mixture of sand and iron it is easiest to use
    • A. 

      Floating

    • B. 

      Picking them out

    • C. 

      A magnet

    • D. 

      Filter with filter paper

  • 5. 
    Solutions are made of at least 2 parts called
    • A. 

      Solution and solute

    • B. 

      Solute and solvent

    • C. 

      Solvent and saline

    • D. 

      Solution and solvent

  • 6. 
    • A. 

      Rock salt

    • B. 

      Table salt

  • 7. 
    What else can I do to make the salt in my soup dissolve faster?
    • A. 

      Add a lot of table salt

    • B. 

      Stir

    • C. 

      Add heat

    • D. 

      Let it sit

  • 8. 
    Which of the following are homogeneous mixtures?
    • A. 

      Water

    • B. 

      Rocky road ice cream

    • C. 

      Shampoo

    • D. 

      Oatmeal

  • 9. 
    Which of the following are mechanical mixtures?
    • A. 

      Chocolate bar with almonds

    • B. 

      Chocolate milk

    • C. 

      Flat pop

    • D. 

      Orange juice with pulp

  • 10. 
    • A. 

      It becomes a homogeneous solution, the salt dissolves into the oil

    • B. 

      It becomes a heterogeneous mixture, the salt doesn't dissovle into the oil

    • C. 

      The oil can only dissolve a little bit of salt

  • 11. 
    To separate a solution of black pepper and salt...
    • A. 

      Add water to collect the pepper

    • B. 

      Pick out the pepper from salt by hand

    • C. 

      Add water, filter out the pepper, boil off the water to get salt

    • D. 

      Add water, filter out the salt, boil off the water to get the pepper