Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 136 · 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? What do we do with “the amount poured”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) cotton or cloth (d) sand and pebbles
3. 3.🫗 How do we separate gravel from fine sand? (a) handpicking (b) evaporating (c) winnowing (d) sieving
4. 4.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
5. 5.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is cold (d) yes, if it is clear
6. 6.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) no, salt passes through (d) it turns to sugar
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) False (b) True
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a battery cell (c) sand and pebbles (d) a funnel
9. 9.⚖️ 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
10. 10.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
11. 11.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) bran from wheat flour (c) sugar from sugar water (d) bad grains from rice
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) turmeric powder (d) muddy water
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) turmeric powder (d) a funnel
14. 14.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) yeast (d) sand and pebbles
15. 15.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
16. 16.⚖️ 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) the same muddy water (c) how clear the water is
17. 17.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
18. 18.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it floats on top (d) it turns to sand
19. 19.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
20. 20.⚖️ 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 glass
21. 21.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
22. 22.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) chaff from wheat grain (c) husk from rice grain (d) small stones from dal
23. 23.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) germs are invisible (d) clear water is salty
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) muddy water (d) a funnel
25. 25.⚖️ 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
26. 26.🫗 How do we separate bad grains from rice? (a) handpicking (b) sieving (c) filtering (d) winnowing
27. 27.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) muddy water (c) a mirror (d) a magnet
28. 28.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) salty (d) muddier
29. 29.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
30. 30.⚖️ 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
31. 31.🫗 Which of these is done by winnowing? (a) mud from water (b) bad grains from rice (c) sugar from sugar water (d) husk from rice grain
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) yeast (d) sand and pebbles
33. 33.True or false: cotton or cloth is needed for the muddy water filter. (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) False (b) True
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) False (b) True
38. 38.⚖️ 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
39. 39.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
40. 40.🛟 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

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