Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 707 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a funnel (d) a battery cell
2. 2.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a battery cell (c) turmeric powder (d) sand and pebbles
4. 4.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) salt from sea water (c) small stones from dal (d) husk from rice grain
5. 5.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wipe hands on face (d) wash hands afterwards
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) muddy water (d) a magnet
7. 7.⚖️ 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
8. 8.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) hot (d) salty
9. 9.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
10. 10.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sugar (c) it turns to sand (d) yes, all of it
11. 11.🫗 How do we separate mud from water? (a) handpicking (b) evaporating (c) winnowing (d) filtering
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is salty (d) clear water is hot
13. 13.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
14. 14.🫗 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
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) sand and pebbles (d) a battery cell
16. 16.True or false: salt from sea water is done by sieving. (a) False (b) True
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a clean glass (c) sand and pebbles (d) a funnel
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
19. 19.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
20. 20.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) husk from rice grain (c) small stones from dal (d) sugar from sugar water
21. 21.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
22. 22.⚖️ 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) True (b) False
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) cotton or cloth (c) sand and pebbles (d) muddy water
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) muddy water (c) cotton or cloth (d) a clean glass
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) muddy water (d) yeast
26. 26.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the filter material (c) the same funnel (d) the same muddy water
28. 28.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) filtering (c) handpicking (d) sieving
29. 29.True or false: bad grains from rice is done by handpicking. (a) True (b) False
30. 30.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
31. 31.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) mud from water (c) salt from sea water (d) bad grains from rice
32. 32.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
33. 33.🫗 How do we separate small stones from dal? (a) filtering (b) winnowing (c) sieving (d) handpicking
34. 34.🫗 How do we separate bad grains from rice? (a) filtering (b) winnowing (c) handpicking (d) sieving
35. 35.True or false: bran from wheat flour is done by filtering. (a) False (b) True
36. 36.True or false: husk from rice grain is done by winnowing. (a) False (b) True
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
38. 38.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
39. 39.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
40. 40.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True

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