Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 700 · 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.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
2. 2.🫗 How do we separate gravel from fine sand? (a) evaporating (b) handpicking (c) filtering (d) sieving
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) turmeric powder (c) sand and pebbles (d) muddy water
5. 5.🛟 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
6. 6.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) a magnet (d) sand and pebbles
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
10. 10.🫗 How do we separate sugar from sugar water? (a) filtering (b) evaporating (c) winnowing (d) sieving
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) True (b) False
12. 12.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) a mirror (d) muddy water
14. 14.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) no, germs may stay (d) yes, always
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) the filter material (c) how clear the water is
16. 16.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
17. 17.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter adds soap (d) the filter traps mud
18. 18.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
19. 19.🧺 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) sand and pebbles
20. 20.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) cotton or cloth (d) yeast
21. 21.🫗 How do we separate bran from wheat flour? (a) sieving (b) filtering (c) winnowing (d) evaporating
22. 22.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) nothing (d) the salt
23. 23.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
24. 24.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
25. 25.True or false: gravel from fine sand is done by filtering. (a) True (b) False
26. 26.⚖️ 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
27. 27.⚖️ 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) False (b) True
28. 28.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves pass through (d) leaves stay behind
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
30. 30.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) salty (d) clearer
31. 31.🔮 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) it turns to sand (d) yes, all of it
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) muddy water (d) a magnet
34. 34.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a clean glass (d) a balloon
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the same glass (c) the filter material (d) the amount poured
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) turmeric powder (c) a clean glass (d) cotton or cloth
38. 38.True or false: mud from water is done by filtering. (a) False (b) True
39. 39.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
40. 40.True or false: a funnel is needed for the muddy water filter. (a) False (b) True

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