Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 193 · 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.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
2. 2.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
3. 3.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) cotton or cloth (c) a funnel (d) a clean glass
4. 4.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) muddy water (c) a magnet (d) a battery cell
5. 5.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) a funnel (d) a mirror
6. 6.True or false: mud from water is done by winnowing. (a) False (b) True
7. 7.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
8. 8.🫗 How do we separate small stones from dal? (a) handpicking (b) filtering (c) evaporating (d) sieving
9. 9.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
10. 10.🫗 Which of these is done by filtering? (a) tea leaves from tea (b) gravel from fine sand (c) small stones from dal (d) bran from wheat flour
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a battery cell (c) a funnel (d) muddy water
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) yeast (c) cotton or cloth (d) muddy water
16. 16.True or false: bad grains from rice is done by sieving. (a) False (b) True
17. 17.🫗 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
18. 18.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sand (d) it turns to sugar
19. 19.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) salty (d) clearer
20. 20.True or false: salt from sea water is done by evaporating. (a) True (b) False
21. 21.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
22. 22.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
23. 23.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
24. 24.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
25. 25.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
26. 26.🫗 Which of these is done by sieving? (a) husk from rice grain (b) sugar from sugar water (c) tea leaves from tea (d) bran from wheat flour
27. 27.🔍 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 turns to sand (d) it dissolves
28. 28.⚖️ 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
29. 29.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
30. 30.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
31. 31.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
32. 32.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) husk from rice grain (c) small stones from dal (d) mud from water
33. 33.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) sand and pebbles (c) a battery cell (d) a mirror
34. 34.⚖️ 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 measure it (c) we change it
35. 35.⚖️ 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) True (b) False
36. 36.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
37. 37.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) both stay behind (d) leaves pass through
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) a funnel (d) a clean glass
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) turmeric powder (d) cotton or cloth
40. 40.True or false: salt from sea water is done by filtering. (a) False (b) True

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