Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 551 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) muddy water (c) a funnel (d) a clean glass
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) yeast (c) cotton or cloth (d) muddy water
3. 3.🫗 Which of these is done by sieving? (a) salt from sea water (b) bran from wheat flour (c) mud from water (d) bad grains from rice
4. 4.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wash hands afterwards (d) wipe hands on face
5. 5.🔮 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
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
7. 7.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is salty (d) clear water is hot
8. 8.🔍 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
9. 9.⚖️ 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 muddy water (d) the same funnel
10. 10.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a magnet (c) yeast (d) turmeric powder
11. 11.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, always (d) yes, if it is cold
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) cotton or cloth (d) a funnel
13. 13.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
14. 14.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a magnet (c) a battery cell (d) yeast
15. 15.⚖️ 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 funnel (c) the same muddy water (d) the filter material
16. 16.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
17. 17.🫗 How do we separate sugar from sugar water? (a) evaporating (b) sieving (c) filtering (d) winnowing
18. 18.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
19. 19.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) a magnet (d) muddy water
20. 20.🫗 How do we separate mud from water? (a) handpicking (b) filtering (c) evaporating (d) sieving
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) turmeric powder (d) muddy water
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) no, salt passes through (d) it turns to sugar
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) a mirror (d) a clean glass
26. 26.🫗 How do we separate bad grains from rice? (a) sieving (b) handpicking (c) filtering (d) winnowing
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a balloon (d) sand and pebbles
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.⚖️ 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
30. 30.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) evaporating (c) winnowing (d) filtering
31. 31.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) sugar from sugar water (c) gravel from fine sand (d) chaff from wheat grain
32. 32.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
33. 33.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
34. 34.⚖️ 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
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) sand and pebbles (d) turmeric powder
36. 36.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) sand and pebbles (c) cotton or cloth (d) muddy water
38. 38.True or false: salt from sea water is done by handpicking. (a) True (b) False
39. 39.True or false: salt from sea water is done by sieving. (a) True (b) False
40. 40.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed

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