Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 791 · 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.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) germs are invisible (d) clear water is hot
2. 2.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
3. 3.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
4. 4.🫗 How do we separate tea leaves from tea? (a) evaporating (b) filtering (c) winnowing (d) handpicking
5. 5.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the amount poured (c) the same funnel (d) how clear the water is
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) sand and pebbles (d) a battery cell
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) turmeric powder (c) a funnel (d) muddy water
9. 9.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) evaporating (c) sieving (d) handpicking
10. 10.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
11. 11.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
12. 12.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the salt (c) the water (d) nothing
13. 13.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
15. 15.🫗 How do we separate husk from rice grain? (a) filtering (b) handpicking (c) evaporating (d) winnowing
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a balloon (d) a funnel
17. 17.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) yeast (c) sand and pebbles (d) muddy water
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.⚖️ 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
22. 22.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
23. 23.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) wipe hands on face (d) nothing is needed
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a funnel (c) sand and pebbles (d) cotton or cloth
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) turmeric powder (c) cotton or cloth (d) a mirror
26. 26.⚖️ 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 keep it the same (c) we change it
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a funnel (c) muddy water (d) sand and pebbles
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) sand and pebbles (d) a battery cell
29. 29.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
30. 30.🫗 How do we separate small stones from dal? (a) winnowing (b) handpicking (c) evaporating (d) sieving
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.⚖️ 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 measure it (c) we keep it the same
33. 33.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) tea leaves from tea (c) bran from wheat flour (d) bad grains from rice
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) turmeric powder (d) sand and pebbles
35. 35.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) turmeric powder (d) muddy water
38. 38.🫗 Which of these is done by filtering? (a) salt from sea water (b) mud from water (c) bad grains from rice (d) chaff from wheat grain
39. 39.⚖️ 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) False (b) True
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False

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