Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 18 · 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.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is cold (d) yes, if it is clear
2. 2.True or false: yeast is needed for the muddy water filter. (a) False (b) True
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a clean glass (c) turmeric powder (d) a battery cell
4. 4.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
5. 5.True or false: gravel from fine sand is done by handpicking. (a) True (b) False
6. 6.🫗 How do we separate gravel from fine sand? (a) winnowing (b) handpicking (c) evaporating (d) sieving
7. 7.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) a funnel (d) a mirror
9. 9.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) small stones from dal (c) mud from water (d) husk from rice grain
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a clean glass (d) a magnet
11. 11.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
12. 12.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) gravel from fine sand (c) salt from sea water (d) husk from rice grain
13. 13.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the water evaporates (d) the mud dissolves
14. 14.⚖️ 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
15. 15.🫗 Which of these is done by filtering? (a) husk from rice grain (b) small stones from dal (c) mud from water (d) bad grains from rice
16. 16.True or false: small stones from dal is done by handpicking. (a) True (b) False
17. 17.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
18. 18.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
19. 19.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sugar (c) yes, all of it (d) it turns to sand
20. 20.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
21. 21.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) a battery cell (d) muddy water
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a balloon (c) cotton or cloth (d) muddy water
24. 24.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it floats on top (d) it turns to sand
25. 25.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
26. 26.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) filtering (d) handpicking
27. 27.🫗 How do we separate bad grains from rice? (a) winnowing (b) filtering (c) handpicking (d) evaporating
28. 28.🫗 How do we separate small stones from dal? (a) handpicking (b) winnowing (c) evaporating (d) filtering
29. 29.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) husk from rice grain (c) tea leaves from tea (d) salt from sea water
30. 30.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
31. 31.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
32. 32.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) sieving (d) evaporating
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) turmeric powder (d) cotton or cloth
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) yeast (c) cotton or cloth (d) sand and pebbles
37. 37.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
38. 38.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
39. 39.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
40. 40.True or false: gravel from fine sand is done by sieving. (a) False (b) True

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