Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 828 · 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 salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
2. 2.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
3. 3.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a funnel (c) sand and pebbles (d) a clean glass
5. 5.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
6. 6.⚖️ 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 funnel (b) the same glass (c) how clear the water is (d) the filter material
7. 7.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
8. 8.True or false: yeast is needed for the muddy water filter. (a) True (b) False
9. 9.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is clear (d) yes, if it is cold
10. 10.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
11. 11.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) chaff from wheat grain (c) tea leaves from tea (d) mud from water
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) the same muddy water (c) how clear the water is (d) the filter material
13. 13.⚖️ 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
14. 14.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
15. 15.True or false: bran from wheat flour is done by sieving. (a) True (b) False
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a funnel (d) a battery cell
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a magnet (d) a funnel
18. 18.🫗 How do we separate sugar from sugar water? (a) filtering (b) evaporating (c) handpicking (d) winnowing
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) turmeric powder (c) sand and pebbles (d) a clean glass
20. 20.⚖️ 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
21. 21.🫗 How do we separate bad grains from rice? (a) filtering (b) handpicking (c) sieving (d) evaporating
22. 22.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
23. 23.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the mud dissolves (d) the water evaporates
24. 24.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
25. 25.True or false: tea leaves from tea is done by filtering. (a) True (b) False
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 keep it the same (c) we measure it
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) yeast (c) a clean glass (d) cotton or cloth
28. 28.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) bran from wheat flour (c) bad grains from rice (d) gravel from fine sand
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a magnet (c) a mirror (d) a battery cell
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
31. 31.True or false: gravel from fine sand is done by sieving. (a) False (b) True
32. 32.⚖️ 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
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) a funnel (c) cotton or cloth (d) a clean glass
34. 34.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
35. 35.🫗 How do we separate mud from water? (a) handpicking (b) filtering (c) winnowing (d) sieving
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) turmeric powder (d) cotton or cloth
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) a funnel (d) muddy water
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) a clean glass (d) muddy water
39. 39.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) it turns to sand (d) no, salt passes through
40. 40.⚖️ 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

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