Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 680 · 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.🔍 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 dissolves (d) it turns to sand
2. 2.⚖️ 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
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) a battery cell (d) a funnel
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
6. 6.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
7. 7.⚖️ 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 measure it (b) we keep it the same (c) we change it
8. 8.⚖️ 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) False (b) True
9. 9.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the filter traps mud (d) the mud dissolves
10. 10.⚖️ 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
11. 11.🫗 Which of these is done by sieving? (a) husk from rice grain (b) bran from wheat flour (c) salt from sea water (d) mud from water
12. 12.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
13. 13.True or false: chaff from wheat grain is done by handpicking. (a) False (b) True
14. 14.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
15. 15.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) muddier (d) clearer
16. 16.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) the salt (d) nothing
17. 17.🫗 How do we separate gravel from fine sand? (a) winnowing (b) sieving (c) evaporating (d) filtering
18. 18.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a mirror (c) a battery cell (d) a magnet
19. 19.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
20. 20.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
21. 21.⚖️ 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 glass (c) the filter material (d) the same funnel
22. 22.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) salt from sea water (c) small stones from dal (d) mud from water
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) muddy water (d) a mirror
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.True or false: small stones from dal is done by evaporating. (a) True (b) False
27. 27.🫗 How do we separate mud from water? (a) evaporating (b) handpicking (c) winnowing (d) filtering
28. 28.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
29. 29.⚖️ 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 amount poured (c) the filter material (d) the same muddy water
30. 30.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) husk from rice grain (c) bran from wheat flour (d) small stones from dal
31. 31.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) leaves stay behind (d) both stay behind
32. 32.🫗 How do we separate husk from rice grain? (a) winnowing (b) evaporating (c) handpicking (d) filtering
33. 33.True or false: small stones from dal is done by sieving. (a) False (b) True
34. 34.🫗 How do we separate sugar from sugar water? (a) winnowing (b) handpicking (c) sieving (d) evaporating
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
36. 36.⚖️ 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
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) cotton or cloth (c) sand and pebbles (d) a funnel
39. 39.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) a funnel (d) muddy water

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