Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 939 · 40 questions

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.

1. 1.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) handpicking (c) evaporating (d) sieving
2. 2.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) salt from sea water (c) sugar from sugar water (d) mud from water
3. 3.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
4. 4.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
5. 5.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it dissolves (d) it turns to sand
6. 6.🛟 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
7. 7.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
8. 8.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
9. 9.⚖️ 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
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the same funnel (c) how clear the water is (d) the amount poured
11. 11.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
12. 12.⚖️ 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 same muddy water (c) the filter material
13. 13.⚖️ 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 funnel
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🔮 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
16. 16.True or false: bad grains from rice is done by evaporating. (a) True (b) False
17. 17.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) sand and pebbles (d) yeast
18. 18.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
19. 19.⚖️ 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
20. 20.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) yeast (d) cotton or cloth
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
22. 22.🫗 Which of these is done by winnowing? (a) mud from water (b) bran from wheat flour (c) husk from rice grain (d) sugar from sugar water
23. 23.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a funnel (d) a mirror
25. 25.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
26. 26.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
27. 27.🫗 Which of these is done by evaporating? (a) salt from sea water (b) bran from wheat flour (c) gravel from fine sand (d) husk from rice grain
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
29. 29.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the same muddy water (c) the same glass (d) the filter material
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) True (b) False
34. 34.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
35. 35.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
36. 36.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
37. 37.⚖️ 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 amount poured
38. 38.⚖️ 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) False (b) True
39. 39.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True

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