Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 464 · 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? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same muddy water
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a mirror (c) a clean glass (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 filter material”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) cotton or cloth (d) sand and pebbles
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) sand and pebbles (c) a funnel (d) cotton or cloth
7. 7.⚖️ 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
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the filter material (c) the same glass (d) how clear the water is
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
10. 10.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is sweet (d) clear water is hot
11. 11.True or false: gravel from fine sand is done by sieving. (a) False (b) True
12. 12.⚖️ 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
13. 13.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
14. 14.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) both stay behind (d) leaves pass through
15. 15.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it sinks to the bottom (d) it floats on top
16. 16.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
17. 17.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
18. 18.🫗 Which of these is done by filtering? (a) bad grains from rice (b) husk from rice grain (c) chaff from wheat grain (d) tea leaves from tea
19. 19.🫗 How do we separate gravel from fine sand? (a) winnowing (b) sieving (c) evaporating (d) filtering
20. 20.⚖️ 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 filter material (c) the same muddy water (d) the amount poured
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) a clean glass (d) a magnet
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) how clear the water is (c) the filter material
23. 23.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) sand and pebbles (d) turmeric powder
24. 24.🧺 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) sand and pebbles
25. 25.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
26. 26.🫗 How do we separate salt from sea water? (a) sieving (b) evaporating (c) handpicking (d) filtering
27. 27.🫗 Which of these is done by evaporating? (a) sugar from sugar water (b) small stones from dal (c) mud from water (d) husk from rice grain
28. 28.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
29. 29.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
30. 30.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) yes, always (d) no, germs may stay
31. 31.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
32. 32.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
33. 33.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
34. 34.🫗 How do we separate sugar from sugar water? (a) handpicking (b) evaporating (c) winnowing (d) sieving
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
36. 36.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
37. 37.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
38. 38.⚖️ 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
39. 39.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
40. 40.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed

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