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Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 861 · 40 questions
TalentJR

What you do (Choose the right way): 1. Put cotton or cloth in the funnel, then layers of sand and small pebbles. 2. Stand the funnel in a clean glass. 3. Pour muddy water in slowly and watch what drips out. 4. Compare the colour before and after — never drink it — and wash your hands.

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  1. 1.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
  2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a funnel (d) a mirror
  3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) how clear the water is (c) the same glass (d) the amount poured
  4. 4.🫗 How do we separate salt from sea water? (a) evaporating (b) handpicking (c) winnowing (d) sieving
  5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
  6. 6.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) germs are invisible (d) clear water is salty
  7. 7.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) turmeric powder (d) a mirror
  8. 8.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) small stones from dal (c) mud from water (d) sugar from sugar water
  9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
  10. 10.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) cotton or cloth (c) a mirror (d) a battery cell
  11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
  12. 12.🫗 How do we separate bad grains from rice? (a) evaporating (b) sieving (c) handpicking (d) winnowing
  13. 13.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) turmeric powder (c) a mirror (d) yeast
  14. 14.True or false: bad grains from rice is done by handpicking. (a) True (b) False
  15. 15.🫗 Which of these is done by filtering? (a) small stones from dal (b) bran from wheat flour (c) mud from water (d) chaff from wheat grain
  16. 16.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) a clean glass (d) a mirror
  17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same muddy water (b) the same funnel (c) how clear the water is (d) the filter material
  18. 18.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
  19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we change it (b) we measure it (c) we keep it the same
  20. 20.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) muddy water (c) a mirror (d) turmeric powder
  21. 21.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer
  22. 22.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) winnowing (c) sieving (d) handpicking
  23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
  24. 24.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) cotton or cloth (c) a magnet (d) a clean glass
  25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
  26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) muddy water (d) cotton or cloth
  27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
  28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
  29. 29.True or false: bran from wheat flour is done by filtering. (a) False (b) True
  30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) how clear the water is (c) the filter material
  31. 31.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
  32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the filter material (c) the amount poured
  33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
  34. 34.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
  35. 35.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
  36. 36.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
  37. 37.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a balloon (c) muddy water (d) cotton or cloth
  38. 38.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a battery cell (d) cotton or cloth
  39. 39.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the filter adds soap (d) the mud dissolves
  40. 40.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) leaves pass through (d) both stay behind

Answer key

  1. no, salt passes through
  2. a mirror
  3. how clear the water is
  4. evaporating
  5. True
  6. germs are invisible
  7. a clean glass
  8. husk from rice grain
  9. False
  10. cotton or cloth
  11. we change it
  12. handpicking
  13. sand and pebbles
  14. True
  15. mud from water
  16. a mirror
  17. the filter material
  18. no, germs may stay
  19. we measure it
  20. muddy water
  21. clearer
  22. winnowing
  23. False
  24. a magnet
  25. False
  26. a balloon
  27. False
  28. we keep it the same
  29. False
  30. the same funnel
  31. needed
  32. the amount poured
  33. True
  34. False
  35. the mud
  36. True
  37. a balloon
  38. a battery cell
  39. the filter traps mud
  40. leaves stay behind

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