Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 87 · 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? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) yeast (c) a mirror (d) muddy water
3. 3.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it sinks to the bottom (d) it dissolves
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
5. 5.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) muddy water (d) a mirror
7. 7.True or false: bran from wheat flour is done by sieving. (a) False (b) True
8. 8.🫗 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
9. 9.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
10. 10.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the mud dissolves (d) the filter traps mud
11. 11.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves stay behind (d) leaves pass through
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) a clean glass (d) cotton or cloth
13. 13.⚖️ 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 same muddy water
14. 14.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
15. 15.🔮 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
16. 16.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) a funnel (d) sand and pebbles
17. 17.True or false: sugar from sugar water is done by filtering. (a) True (b) False
18. 18.True or false: gravel from fine sand is done by sieving. (a) True (b) False
19. 19.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) a balloon (d) sand and pebbles
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) a clean glass (d) a magnet
22. 22.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) how clear the water is (c) the same funnel (d) the same muddy water
24. 24.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
25. 25.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
26. 26.🧺 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
27. 27.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) wipe hands on face (d) lick your fingers
28. 28.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) a magnet (d) a clean glass
30. 30.True or false: mud from water is done by filtering. (a) True (b) False
31. 31.⚖️ 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
32. 32.True or false: gravel from fine sand is done by filtering. (a) False (b) True
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
34. 34.⚖️ 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
35. 35.🫗 How do we separate tea leaves from tea? (a) handpicking (b) evaporating (c) filtering (d) sieving
36. 36.True or false: mud from water is done by sieving. (a) False (b) True
37. 37.⚖️ 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) the filter material (c) the amount poured (d) the same muddy water
38. 38.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) it turns to sand (d) yes, all of it
39. 39.🫗 Which of these is done by filtering? (a) mud from water (b) sugar from sugar water (c) gravel from fine sand (d) salt from sea water
40. 40.🫗 How do we separate bad grains from rice? (a) handpicking (b) filtering (c) winnowing (d) sieving

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