Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 53 · 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) germs are invisible (b) clear water is salty (c) clear water is hot (d) clear water is sweet
2. 2.🫗 Which of these is done by filtering? (a) bad grains from rice (b) bran from wheat flour (c) mud from water (d) gravel from fine sand
3. 3.True or false: salt from sea water is done by handpicking. (a) True (b) False
4. 4.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a funnel (d) turmeric powder
6. 6.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
7. 7.🔮 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) it turns to sand (d) no, salt passes through
8. 8.True or false: salt from sea water is done by evaporating. (a) True (b) False
9. 9.True or false: gravel from fine sand is done by sieving. (a) True (b) False
10. 10.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wipe hands on face (d) wash hands afterwards
11. 11.🫗 How do we separate mud from water? (a) evaporating (b) filtering (c) winnowing (d) sieving
12. 12.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
13. 13.🧺 Do we need a mirror 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 glass is what we measure. (a) False (b) True
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.🫗 How do we separate small stones from dal? (a) handpicking (b) sieving (c) filtering (d) evaporating
17. 17.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the mud dissolves (d) the filter traps mud
18. 18.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) chaff from wheat grain (c) small stones from dal (d) tea leaves from tea
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it floats on top (d) it dissolves
21. 21.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) leaves stay behind (d) both stay behind
22. 22.⚖️ 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) the same funnel (c) how clear the water is (d) the same glass
23. 23.⚖️ 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
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
25. 25.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) salt from sea water (c) gravel from fine sand (d) chaff from wheat grain
26. 26.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) sugar from sugar water (c) chaff from wheat grain (d) mud from water
27. 27.🫗 How do we separate gravel from fine sand? (a) evaporating (b) sieving (c) winnowing (d) handpicking
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) turmeric powder (c) yeast (d) cotton or cloth
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a balloon (d) a funnel
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a mirror (d) cotton or cloth
31. 31.True or false: bran from wheat flour is done by sieving. (a) True (b) False
32. 32.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
34. 34.True or false: chaff from wheat grain is done by handpicking. (a) True (b) False
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) sand and pebbles (d) a magnet
36. 36.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
37. 37.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) cotton or cloth (c) a funnel (d) a clean glass
39. 39.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) yeast (d) a clean glass

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