Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 888 · 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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) muddy water (d) yeast
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, if it is cold (d) yes, always
6. 6.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) sand and pebbles (d) cotton or cloth
8. 8.🛟 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
9. 9.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
10. 10.True or false: yeast is needed for the muddy water filter. (a) False (b) True
11. 11.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) muddier (d) salty
12. 12.True or false: salt from sea water is done by evaporating. (a) False (b) True
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a funnel (d) yeast
14. 14.⚖️ 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 glass (b) the same funnel (c) the filter material (d) the amount poured
15. 15.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it turns to sand (d) it floats on top
16. 16.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
17. 17.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) yes, all of it (d) no, salt passes through
18. 18.True or false: bad grains from rice is done by evaporating. (a) False (b) True
19. 19.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
20. 20.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
21. 21.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) sand and pebbles (c) a battery cell (d) turmeric powder
22. 22.🫗 How do we separate gravel from fine sand? (a) winnowing (b) handpicking (c) sieving (d) filtering
23. 23.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
24. 24.🫗 How do we separate bad grains from rice? (a) evaporating (b) winnowing (c) handpicking (d) filtering
25. 25.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.True or false: tea leaves from tea is done by handpicking. (a) True (b) False
29. 29.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a balloon (c) a clean glass (d) a funnel
31. 31.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
32. 32.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
33. 33.True or false: gravel from fine sand is done by sieving. (a) False (b) True
34. 34.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) cotton or cloth (d) a magnet
35. 35.🫗 Which of these is done by filtering? (a) gravel from fine sand (b) mud from water (c) sugar from sugar water (d) chaff from wheat grain
36. 36.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
37. 37.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
38. 38.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
39. 39.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same muddy water

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