Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 914 · 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 same glass is kept the same. (a) True (b) False
2. 2.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) cotton or cloth (c) a balloon (d) yeast
3. 3.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) bran from wheat flour (c) mud from water (d) bad grains from rice
4. 4.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
5. 5.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
6. 6.True or false: chaff from wheat grain is done by sieving. (a) False (b) True
7. 7.True or false: tea leaves from tea is done by handpicking. (a) True (b) False
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) turmeric powder (c) sand and pebbles (d) muddy water
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a funnel (d) a magnet
10. 10.🔮 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) no, salt passes through (d) yes, all of it
11. 11.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
12. 12.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
13. 13.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
14. 14.🫗 How do we separate bad grains from rice? (a) sieving (b) handpicking (c) filtering (d) winnowing
15. 15.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
16. 16.True or false: mud from water is done by filtering. (a) True (b) False
17. 17.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) yes, if it is clear (d) no, germs may stay
18. 18.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
19. 19.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) bad grains from rice (c) bran from wheat flour (d) tea leaves from tea
20. 20.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
21. 21.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) chaff from wheat grain (c) gravel from fine sand (d) bran from wheat flour
22. 22.⚖️ 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 filter material (c) the same funnel (d) the same muddy water
23. 23.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) muddy water (d) a battery cell
25. 25.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) muddier (d) salty
26. 26.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
27. 27.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is hot (d) clear water is sweet
28. 28.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) turmeric powder (d) cotton or cloth
29. 29.⚖️ 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
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
31. 31.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves
32. 32.True or false: salt from sea water is done by evaporating. (a) False (b) True
33. 33.⚖️ 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
34. 34.True or false: bad grains from rice is done by winnowing. (a) True (b) False
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) yeast (c) turmeric powder (d) a magnet
36. 36.🫗 Which of these is done by filtering? (a) tea leaves from tea (b) sugar from sugar water (c) small stones from dal (d) chaff from wheat grain
37. 37.🫗 How do we separate chaff from wheat grain? (a) sieving (b) winnowing (c) handpicking (d) filtering
38. 38.🫗 How do we separate husk from rice grain? (a) winnowing (b) sieving (c) handpicking (d) filtering
39. 39.🫗 Which of these is done by sieving? (a) salt from sea water (b) husk from rice grain (c) mud from water (d) gravel from fine sand
40. 40.⚖️ 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

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