Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 255 · 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? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same funnel
2. 2.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
4. 4.⚖️ 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
5. 5.🛟 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
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
7. 7.🔮 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
8. 8.🫗 How do we separate salt from sea water? (a) evaporating (b) sieving (c) handpicking (d) winnowing
9. 9.⚖️ 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) False (b) True
10. 10.⚖️ 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 keep it the same (c) we change it
11. 11.⚖️ 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
12. 12.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wipe hands on face (d) wash hands afterwards
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
14. 14.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a mirror (c) a magnet (d) a balloon
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) a clean glass (d) a balloon
17. 17.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
18. 18.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
19. 19.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
20. 20.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the amount poured (c) the same muddy water (d) how clear the water is
22. 22.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) small stones from dal (c) sugar from sugar water (d) bad grains from rice
23. 23.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
24. 24.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sugar (d) it turns to sand
25. 25.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) bad grains from rice (c) small stones from dal (d) sugar from sugar water
26. 26.True or false: gravel from fine sand is done by handpicking. (a) False (b) True
27. 27.🫗 How do we separate husk from rice grain? (a) evaporating (b) filtering (c) handpicking (d) winnowing
28. 28.⚖️ 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 measure it (c) we keep it the same
29. 29.True or false: gravel from fine sand is done by filtering. (a) False (b) True
30. 30.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
31. 31.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
32. 32.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a mirror (c) a funnel (d) sand and pebbles
34. 34.🫗 How do we separate tea leaves from tea? (a) filtering (b) handpicking (c) winnowing (d) evaporating
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) sand and pebbles (c) a magnet (d) a balloon
36. 36.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, always (d) yes, if it is cold
37. 37.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
38. 38.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
39. 39.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) cotton or cloth (d) a battery cell
40. 40.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False

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