Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 94 · 40 questions

What you do (Yellow or red?): 1. Mix turmeric powder with a little water into a paste and paint it on white paper strips; let them dry. 2. Put a drop of soap solution on one strip and a drop of lemon juice on another. 3. Write down the colour each drop makes. 4. Add lemon juice to the reddish spot and watch it change back.

1. 1.🫧 Which of these is neutral? (a) curd (b) salt water (c) soap solution (d) tamarind water
2. 2.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
3. 3.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the number of drops (d) the liquid we test
5. 5.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
6. 6.True or false: tamarind water is a base. (a) True (b) False
7. 7.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
8. 8.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
9. 9.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
10. 10.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
11. 11.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) turmeric powder (c) a dropper or spoon (d) lemon juice
12. 12.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap is magnetic (d) soap water is a base
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
14. 14.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
15. 15.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
16. 16.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
17. 17.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
19. 19.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) bright blue (d) it stays white
20. 20.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) lemon juice (d) sugar water
21. 21.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) a comb (d) turmeric powder
22. 22.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) salt water (d) soap solution
23. 23.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) salt water (d) tamarind water
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
26. 26.🫧 Which of these is neutral? (a) vinegar (b) curd (c) plain water (d) baking soda water
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) white paper strips (c) turmeric powder (d) soap solution
29. 29.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) tamarind water (c) soap solution (d) sugar water
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the light we look in (c) the turmeric paper (d) the liquid we test
31. 31.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
33. 33.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it turns yellow again (d) it disappears
34. 34.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
35. 35.True or false: water is not needed for the turmeric test. (a) True (b) False
36. 36.True or false: lemon juice is a base. (a) True (b) False
37. 37.True or false: a comb is needed for the turmeric test. (a) False (b) True
38. 38.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a dropper or spoon (d) a battery cell
39. 39.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
40. 40.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) orange juice (d) detergent water

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