Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 720 · 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) yes, if it is cold (b) yes, if it is clear (c) yes, always (d) no, germs may stay
2. 2.🫗 How do we separate gravel from fine sand? (a) winnowing (b) handpicking (c) sieving (d) filtering
3. 3.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it sinks to the bottom (c) it turns to sand (d) it dissolves
4. 4.🫗 Which of these is done by filtering? (a) mud from water (b) small stones from dal (c) bad grains from rice (d) salt from sea water
5. 5.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sugar (d) it turns to sand
6. 6.True or false: salt from sea water is done by winnowing. (a) True (b) False
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a clean glass (d) a balloon
8. 8.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.🛟 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
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) sand and pebbles (c) cotton or cloth (d) a funnel
13. 13.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) leaves pass through (d) both stay behind
14. 14.🫗 How do we separate tea leaves from tea? (a) filtering (b) evaporating (c) winnowing (d) sieving
15. 15.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
16. 16.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a balloon (c) sand and pebbles (d) cotton or cloth
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
19. 19.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) salt from sea water (c) bad grains from rice (d) bran from wheat flour
20. 20.🫗 How do we separate sugar from sugar water? (a) winnowing (b) sieving (c) evaporating (d) filtering
21. 21.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
22. 22.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is sweet (d) clear water is hot
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) sand and pebbles (d) a magnet
26. 26.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) turmeric powder (c) muddy water (d) a funnel
29. 29.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) sand and pebbles (c) a mirror (d) a funnel
32. 32.🫗 Which of these is done by winnowing? (a) salt from sea water (b) husk from rice grain (c) mud from water (d) gravel from fine sand
33. 33.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) a battery cell (d) muddy water
34. 34.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a mirror (d) sand and pebbles
36. 36.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
37. 37.🫗 How do we separate husk from rice grain? (a) handpicking (b) evaporating (c) winnowing (d) filtering
38. 38.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
39. 39.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
40. 40.🔮 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

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