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Separation techniques & mixtures

Separation techniques & mixtures. CHOOSE JUST ONE ANSWER A, B, C, OR D. A. Sand. B. chalk. C. Salt. Sulphur. D. Question 1. Which of these solids dissolves in water?. Wrong Answer!. salt. Try Again. A. To separate a solid from a liquid. B. To separate two liquids. C.

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Separation techniques & mixtures

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  1. Separation techniques & mixtures CHOOSE JUST ONE ANSWER A, B, C, OR D

  2. A Sand B chalk C Salt Sulphur D Question 1 Which of these solids dissolves in water?

  3. Wrong Answer! salt Try Again

  4. A To separate a solid from a liquid B To separate two liquids C To crystallise salt To separate a mixture of different coloured dyes D Question 2 When can filtration be used?

  5. Wrong Answer! To separate a solid from a liquid Try Again

  6. A solute B filtrate C solvent residue D Question 3 During filtration, an insoluble solid collects in the filter paper. What is this called?

  7. Wrong Answer! residue Try Again

  8. A chalk B residue C filtrate insoluble D Question 4 During filtration a liquid passes through the filter paper. What is this called?

  9. Wrong Answer! filtrate Try Again

  10. A Dissolve the salt, filter the solution, recrystallise the salt B chromatography C Fractional distillation Filter the dry mixture, crystallise the salt D Question 5 Which techniques could be used to get salt from a dry mixture of salt and sand

  11. Wrong Answer! Dissolve the salt, filter the solution, recrystallise the salt Try Again

  12. A Salt and gases B water C Water and salt Water, salt and gases D Question 6 Sea water is a mixture, what does it consist of….?

  13. Wrong Answer! Water, salt and gases Try Again

  14. A oxygen B Air C Copper sulphate Quartz D Question 7 Which of these is a mixture?

  15. Wrong Answer! Air Try Again

  16. A Sea water B Calcium carbonate C Granite Air D Question 8 Which of these is not a mixture?

  17. Wrong Answer! Granite Try Again

  18. A Mixtures have a fixed composition B In mixtures the atoms or compounds are joined together C Mixtures are hard to separate Mixtures do not have a fixed composition D Question 9 Which of these statement is true?

  19. Wrong Answer! Mixtures do not have a fixed composition Try Again

  20. A Compounds are easy to separate B Compounds have a fixed composition C Compounds do not have a fixed composition In compounds the atoms or particles are not joined together D Question 10 Which of these statement is true?

  21. Wrong Answer! Compounds have a fixed composition Try Again

  22. Congratulations! • Your are great, well done.

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