Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 321 · 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.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) yes, all of it (d) it turns to sugar
2. 2.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
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.True or false: salt from sea water is done by sieving. (a) True (b) False
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) turmeric powder (d) a clean glass
6. 6.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) yeast (c) a battery cell (d) turmeric powder
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
8. 8.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
9. 9.🫗 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
10. 10.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
11. 11.🫗 How do we separate mud from water? (a) winnowing (b) evaporating (c) sieving (d) filtering
12. 12.True or false: sugar from sugar water is done by winnowing. (a) True (b) False
13. 13.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
14. 14.🫗 Which of these is done by evaporating? (a) small stones from dal (b) tea leaves from tea (c) mud from water (d) sugar from sugar water
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) a clean glass (d) turmeric powder
16. 16.⚖️ 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) the same muddy water (c) how clear the water is (d) the amount poured
17. 17.🫗 How do we separate sugar from sugar water? (a) handpicking (b) evaporating (c) sieving (d) filtering
18. 18.True or false: bad grains from rice is done by winnowing. (a) True (b) False
19. 19.🫗 How do we separate salt from sea water? (a) sieving (b) handpicking (c) evaporating (d) winnowing
20. 20.True or false: tea leaves from tea is done by filtering. (a) False (b) True
21. 21.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) handpicking (d) winnowing
22. 22.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
23. 23.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
24. 24.True or false: husk from rice grain is done by winnowing. (a) False (b) True
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
26. 26.⚖️ 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 amount poured (c) how clear the water is (d) the filter material
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) sand and pebbles (d) cotton or cloth
28. 28.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
29. 29.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
30. 30.🔮 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
31. 31.True or false: bran from wheat flour is done by sieving. (a) False (b) True
32. 32.🫗 How do we separate small stones from dal? (a) winnowing (b) handpicking (c) filtering (d) evaporating
33. 33.⚖️ 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) False (b) True
34. 34.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the water evaporates (d) the filter traps mud
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) a mirror (d) muddy water
36. 36.⚖️ 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 keep it the same (b) we measure it (c) we change it
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) cotton or cloth (d) turmeric powder
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) sand and pebbles (c) a clean glass (d) a funnel
39. 39.🫗 How do we separate husk from rice grain? (a) filtering (b) evaporating (c) winnowing (d) sieving
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same

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