Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 352 · 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.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) yeast (d) muddy water
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the filter material (c) the amount poured (d) the same funnel
4. 4.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
5. 5.🫗 Which of these is done by evaporating? (a) salt from sea water (b) bad grains from rice (c) bran from wheat flour (d) gravel from fine sand
6. 6.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) turmeric powder (c) a magnet (d) a mirror
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) the filter material (c) how clear the water is
8. 8.⚖️ 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
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) cotton or cloth (d) a balloon
10. 10.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) a magnet (d) a clean glass
12. 12.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
13. 13.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a clean glass (c) a funnel (d) cotton or cloth
17. 17.⚖️ 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
18. 18.⚖️ 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
19. 19.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it sinks to the bottom (d) it floats on top
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) muddy water (d) a battery cell
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
22. 22.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) the filter material (c) how clear the water is
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) a balloon
25. 25.🫗 Which of these is done by sieving? (a) bad grains from rice (b) tea leaves from tea (c) small stones from dal (d) gravel from fine sand
26. 26.True or false: bran from wheat flour is done by sieving. (a) False (b) True
27. 27.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the water evaporates (d) the filter adds soap
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
30. 30.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the water (d) the salt
31. 31.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
32. 32.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
33. 33.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
34. 34.⚖️ 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
35. 35.⚖️ 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
36. 36.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
37. 37.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
38. 38.True or false: small stones from dal is done by handpicking. (a) False (b) True
39. 39.⚖️ 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) True (b) False
40. 40.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed

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