Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 989 · 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.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) yeast (d) sand and pebbles
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.⚖️ 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
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a mirror (c) muddy water (d) cotton or cloth
6. 6.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
7. 7.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
8. 8.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
9. 9.True or false: mud from water is done by filtering. (a) True (b) False
10. 10.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
11. 11.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
12. 12.True or false: chaff from wheat grain is done by sieving. (a) False (b) True
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.🧺 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
16. 16.⚖️ 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) the amount poured (c) how clear the water is
17. 17.⚖️ 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 measure it (c) we change it
18. 18.🫗 How do we separate mud from water? (a) filtering (b) winnowing (c) handpicking (d) sieving
19. 19.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
20. 20.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the salt (d) the water
21. 21.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it turns to sand (d) it dissolves
22. 22.True or false: bad grains from rice is done by sieving. (a) True (b) False
23. 23.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
24. 24.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) gravel from fine sand (c) bran from wheat flour (d) bad grains from rice
25. 25.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) nothing is needed (d) wash hands afterwards
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) cotton or cloth (d) a battery cell
28. 28.⚖️ 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 funnel
29. 29.⚖️ 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
30. 30.🔮 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
31. 31.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
32. 32.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) mud from water (c) chaff from wheat grain (d) small stones from dal
33. 33.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) muddy water (c) a mirror (d) yeast
34. 34.⚖️ 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 filter material (d) the same muddy water
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
38. 38.🫗 How do we separate tea leaves from tea? (a) sieving (b) evaporating (c) handpicking (d) filtering
39. 39.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
40. 40.⚖️ 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) how clear the water is (c) the filter material

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