Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 450 · 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? True or false: the same muddy water is kept the same. (a) True (b) False
2. 2.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a funnel (c) a balloon (d) yeast
3. 3.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a battery cell (c) a magnet (d) a balloon
4. 4.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) small stones from dal (c) husk from rice grain (d) bran from wheat flour
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) muddy water (d) a funnel
6. 6.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is clear (d) yes, if it is cold
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) wipe hands on face (d) nothing is needed
9. 9.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) a magnet (d) muddy water
11. 11.True or false: tea leaves from tea is done by sieving. (a) False (b) True
12. 12.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
13. 13.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
14. 14.True or false: sugar from sugar water is done by filtering. (a) False (b) True
15. 15.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
16. 16.🫗 Which of these is done by sieving? (a) bad grains from rice (b) gravel from fine sand (c) tea leaves from tea (d) mud from water
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 measure it (b) we change it (c) we keep it the same
18. 18.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) bran from wheat flour (c) chaff from wheat grain (d) small stones from dal
19. 19.True or false: small stones from dal is done by handpicking. (a) False (b) True
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a battery cell (c) sand and pebbles (d) a funnel
21. 21.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) muddy water (d) a mirror
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
24. 24.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) both stay behind (d) leaves pass through
25. 25.⚖️ 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 muddy water
26. 26.⚖️ 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
27. 27.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
28. 28.⚖️ 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) True (b) False
29. 29.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
30. 30.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
31. 31.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) gravel from fine sand (c) mud from water (d) bad grains from rice
32. 32.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
33. 33.⚖️ 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
34. 34.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
35. 35.True or false: chaff from wheat grain is done by filtering. (a) True (b) False
36. 36.⚖️ 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
37. 37.🫗 How do we separate sugar from sugar water? (a) evaporating (b) handpicking (c) sieving (d) winnowing
38. 38.⚖️ 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) True (b) False
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.True or false: a magnet is needed for the muddy water filter. (a) True (b) False

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