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Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 426 · 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.

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

Answer key

  1. False
  2. how clear the water is
  3. leaves stay behind
  4. we keep it the same
  5. False
  6. needed
  7. False
  8. False
  9. a funnel
  10. yeast
  11. a balloon
  12. not needed
  13. True
  14. handpicking
  15. False
  16. the same glass
  17. False
  18. germs are invisible
  19. clearer
  20. not needed
  21. not needed
  22. False
  23. sieving
  24. winnowing
  25. the mud
  26. False
  27. True
  28. muddy water
  29. we keep it the same
  30. True
  31. needed
  32. False
  33. True
  34. False
  35. it sinks to the bottom
  36. cotton or cloth
  37. True
  38. no, germs may stay
  39. evaporating
  40. needed

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