Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 872 · 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 cotton or cloth for the muddy water filter? (a) not needed (b) needed
2. 2.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
3. 3.⚖️ 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
4. 4.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
5. 5.⚖️ 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 change it (c) we keep it the same
6. 6.⚖️ 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
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a clean glass (c) muddy water (d) a funnel
9. 9.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) salt from sea water (c) husk from rice grain (d) sugar from sugar water
10. 10.True or false: bad grains from rice is done by evaporating. (a) False (b) True
11. 11.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
12. 12.⚖️ 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
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.True or false: sugar from sugar water is done by handpicking. (a) True (b) False
16. 16.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) salty (d) clearer
17. 17.🫗 How do we separate small stones from dal? (a) filtering (b) evaporating (c) sieving (d) handpicking
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a balloon (d) cotton or cloth
19. 19.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) wipe hands on face (d) nothing is needed
20. 20.🫗 How do we separate salt from sea water? (a) handpicking (b) sieving (c) evaporating (d) filtering
21. 21.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
22. 22.🫗 How do we separate tea leaves from tea? (a) evaporating (b) filtering (c) handpicking (d) sieving
23. 23.⚖️ 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 filter material (c) the same funnel (d) the amount poured
24. 24.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) cotton or cloth (d) a balloon
26. 26.🫗 How do we separate gravel from fine sand? (a) winnowing (b) handpicking (c) sieving (d) evaporating
27. 27.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
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 keep it the same (b) we change it (c) we measure it
29. 29.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
30. 30.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a funnel (c) sand and pebbles (d) cotton or cloth
32. 32.⚖️ 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
33. 33.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
35. 35.True or false: gravel from fine sand is done by sieving. (a) False (b) True
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a battery cell (c) sand and pebbles (d) cotton or cloth
37. 37.🔍 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
38. 38.True or false: tea leaves from tea 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 hot (b) clear water is sweet (c) germs are invisible (d) clear water is salty
40. 40.⚖️ 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 same glass (d) the amount poured

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