Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 710 · 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.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a clean glass (d) yeast
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) sand and pebbles (d) a balloon
3. 3.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) yes, all of it (d) no, salt passes through
6. 6.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) bran from wheat flour (c) gravel from fine sand (d) small stones from dal
7. 7.True or false: salt from sea water is done by sieving. (a) True (b) False
8. 8.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) muddy water (c) a mirror (d) yeast
9. 9.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it floats on top (d) it sinks to the bottom
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) a mirror (d) cotton or cloth
11. 11.🫗 How do we separate sugar from sugar water? (a) handpicking (b) winnowing (c) sieving (d) evaporating
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a funnel (c) muddy water (d) a clean glass
13. 13.⚖️ 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 change it (b) we keep it the same (c) we measure it
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a clean glass (c) a funnel (d) muddy water
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) how clear the water is (c) the filter material
16. 16.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wash hands afterwards (d) wipe hands on face
17. 17.True or false: tea leaves from tea is done by winnowing. (a) True (b) False
18. 18.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
19. 19.🫗 Which of these is done by sieving? (a) husk from rice grain (b) tea leaves from tea (c) bran from wheat flour (d) chaff from wheat grain
20. 20.🫗 How do we separate small stones from dal? (a) handpicking (b) sieving (c) evaporating (d) filtering
21. 21.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
22. 22.⚖️ 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 same glass (c) the amount poured (d) the filter material
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) the salt (d) nothing
25. 25.🫗 How do we separate bad grains from rice? (a) sieving (b) filtering (c) handpicking (d) evaporating
26. 26.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) a funnel (d) turmeric powder
28. 28.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
29. 29.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
30. 30.True or false: yeast is needed for the muddy water filter. (a) True (b) False
31. 31.🫗 How do we separate husk from rice grain? (a) winnowing (b) evaporating (c) sieving (d) filtering
32. 32.True or false: gravel from fine sand is done by sieving. (a) True (b) False
33. 33.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
34. 34.⚖️ 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 funnel (b) how clear the water is (c) the amount poured (d) the filter material
35. 35.True or false: bad grains from rice is done by sieving. (a) True (b) False
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ 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
38. 38.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
40. 40.⚖️ 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) False (b) True

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