Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 674 · 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.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) it turns to sugar (d) yes, all of it
2. 2.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) germs are invisible (d) clear water is sweet
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a magnet (c) a funnel (d) cotton or cloth
4. 4.⚖️ 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
5. 5.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
6. 6.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
7. 7.⚖️ 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 amount poured
8. 8.⚖️ 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
9. 9.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
10. 10.🔮 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
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) cotton or cloth (c) a funnel (d) muddy water
12. 12.🫗 How do we separate bran from wheat flour? (a) filtering (b) handpicking (c) evaporating (d) sieving
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) a clean glass (d) a balloon
14. 14.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a mirror (c) sand and pebbles (d) cotton or cloth
17. 17.True or false: bad grains from rice is done by handpicking. (a) True (b) False
18. 18.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
19. 19.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
20. 20.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
21. 21.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) the water (d) nothing
22. 22.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) salt from sea water (c) bad grains from rice (d) gravel from fine sand
23. 23.🫗 How do we separate bad grains from rice? (a) filtering (b) handpicking (c) winnowing (d) sieving
24. 24.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) gravel from fine sand (c) bran from wheat flour (d) chaff from wheat grain
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) muddy water (d) a battery cell
26. 26.⚖️ 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
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same glass (b) how clear the water is (c) the same funnel (d) the filter material
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
30. 30.🫗 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
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) turmeric powder (d) a funnel
32. 32.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) yeast (c) a magnet (d) a balloon
33. 33.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) gravel from fine sand (c) small stones from dal (d) sugar from sugar water
34. 34.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it sinks to the bottom (d) it floats on top
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a magnet (c) sand and pebbles (d) muddy water
36. 36.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) no, germs may stay (d) yes, always
37. 37.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
38. 38.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
39. 39.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) leaves pass through (d) tea stays behind
40. 40.True or false: gravel from fine sand is done by evaporating. (a) True (b) False

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