Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 100 · 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.🫗 How do we separate husk from rice grain? (a) evaporating (b) sieving (c) winnowing (d) handpicking
2. 2.⚖️ 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
3. 3.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
4. 4.🫗 Which of these is done by handpicking? (a) mud from water (b) husk from rice grain (c) bran from wheat flour (d) bad grains from rice
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) the water (d) nothing
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a funnel (c) muddy water (d) cotton or cloth
7. 7.True or false: husk from rice grain is done by sieving. (a) True (b) False
8. 8.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) gravel from fine sand (c) tea leaves from tea (d) chaff from wheat grain
9. 9.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) a mirror (d) a magnet
10. 10.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
11. 11.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a funnel (c) a magnet (d) a mirror
12. 12.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
13. 13.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
14. 14.🛟 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
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) a magnet (d) muddy water
16. 16.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sand (d) it turns to sugar
17. 17.⚖️ 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
18. 18.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) lick your fingers (d) nothing is needed
19. 19.⚖️ 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 same muddy water (c) the filter material
20. 20.🔮 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
21. 21.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, if it is cold (d) yes, always
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.True or false: bad grains from rice is done by handpicking. (a) True (b) False
24. 24.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) yeast (c) a balloon (d) a battery cell
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) yeast (d) a clean glass
26. 26.🫗 How do we separate bad grains from rice? (a) winnowing (b) evaporating (c) handpicking (d) sieving
27. 27.⚖️ 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
28. 28.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
29. 29.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
30. 30.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) tea leaves from tea (c) husk from rice grain (d) bad grains from rice
31. 31.⚖️ 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 same glass (d) the filter material
32. 32.True or false: bad grains from rice is done by sieving. (a) True (b) False
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) muddy water (c) sand and pebbles (d) a funnel
35. 35.⚖️ 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 muddy water (c) the amount poured (d) the filter material
36. 36.🫗 How do we separate sugar from sugar water? (a) handpicking (b) filtering (c) evaporating (d) sieving
37. 37.⚖️ 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
38. 38.True or false: husk from rice grain is done by winnowing. (a) True (b) False
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) sand and pebbles (c) muddy water (d) a clean glass
40. 40.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True

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