Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 911 · 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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
2. 2.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
3. 3.⚖️ 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
4. 4.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
5. 5.🫗 Which of these is done by winnowing? (a) salt from sea water (b) gravel from fine sand (c) husk from rice grain (d) bran from wheat flour
6. 6.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
7. 7.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
8. 8.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
9. 9.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) turmeric powder (c) sand and pebbles (d) cotton or cloth
12. 12.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) no, salt passes through (d) yes, all of it
13. 13.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
14. 14.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
15. 15.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
16. 16.⚖️ 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) True (b) False
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a battery cell (c) a clean glass (d) muddy water
18. 18.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) leaves pass through (d) tea stays behind
19. 19.🫗 Which of these is done by evaporating? (a) small stones from dal (b) husk from rice grain (c) tea leaves from tea (d) salt from sea water
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same muddy water (c) how clear the water is (d) the same funnel
21. 21.⚖️ 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 keep it the same (b) we change it (c) we measure it
22. 22.True or false: gravel from fine sand is done by sieving. (a) True (b) False
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a battery cell (c) turmeric powder (d) a magnet
25. 25.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
26. 26.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
27. 27.🫗 How do we separate bran from wheat flour? (a) handpicking (b) evaporating (c) sieving (d) winnowing
28. 28.True or false: gravel from fine sand is done by evaporating. (a) True (b) False
29. 29.🫗 Which of these is done by filtering? (a) mud from water (b) bad grains from rice (c) husk from rice grain (d) bran from wheat flour
30. 30.True or false: mud from water is done by filtering. (a) False (b) True
31. 31.⚖️ 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 same funnel
32. 32.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) muddy water (c) a battery cell (d) a magnet
33. 33.True or false: sugar from sugar water is done by handpicking. (a) False (b) True
34. 34.⚖️ 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
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) cotton or cloth (d) a balloon
36. 36.🫗 How do we separate husk from rice grain? (a) sieving (b) winnowing (c) evaporating (d) filtering
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 same muddy water
38. 38.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
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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