Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 185 · 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.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it turns to sand (d) it floats on top
2. 2.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
3. 3.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a battery cell (d) muddy water
5. 5.True or false: salt from sea water is done by sieving. (a) True (b) False
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) how clear the water is (c) the amount poured (d) the same funnel
7. 7.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
8. 8.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) sand and pebbles (d) a balloon
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) muddy water (c) a clean glass (d) a funnel
11. 11.⚖️ 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
12. 12.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
13. 13.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the water (d) the salt
14. 14.True or false: bran from wheat flour is done by sieving. (a) True (b) False
15. 15.⚖️ 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
16. 16.⚖️ 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
17. 17.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves
18. 18.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
19. 19.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
20. 20.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
21. 21.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
22. 22.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) mud from water (c) bran from wheat flour (d) bad grains from rice
23. 23.🫗 How do we separate gravel from fine sand? (a) sieving (b) filtering (c) winnowing (d) handpicking
24. 24.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) yeast (c) a battery cell (d) a clean glass
26. 26.⚖️ 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
27. 27.🫗 How do we separate bad grains from rice? (a) sieving (b) evaporating (c) winnowing (d) handpicking
28. 28.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
29. 29.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) salt from sea water (c) chaff from wheat grain (d) small stones from dal
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) a clean glass (d) turmeric powder
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
32. 32.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
33. 33.⚖️ 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 muddy water (b) the same funnel (c) the filter material (d) the amount poured
34. 34.⚖️ 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
35. 35.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a magnet (c) a battery cell (d) turmeric powder
38. 38.True or false: bad grains from rice is done by sieving. (a) False (b) True
39. 39.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) germs are invisible (d) clear water is sweet
40. 40.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False

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