Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 692 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) lemon juice (c) sugar water (d) plain water
3. 3.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a comb (c) a dropper or spoon (d) water
4. 4.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
5. 5.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
6. 6.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown
7. 7.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) tamarind water (d) soap solution
8. 8.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) green (d) reddish
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
11. 11.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.🧺 Which of these is needed for the turmeric test? (a) yeast (b) white paper strips (c) a magnet (d) a comb
13. 13.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) a comb (d) lemon juice
16. 16.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) baking soda water (c) detergent water (d) soap solution
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) a comb (d) soap solution
18. 18.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it disappears (c) it turns darker red (d) it turns blue
19. 19.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
20. 20.🫧 Which of these is a base? (a) soap solution (b) sugar water (c) orange juice (d) curd
21. 21.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) sugar water (d) detergent water
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
23. 23.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a magnet (c) a battery cell (d) a comb
24. 24.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) detergent water (c) sugar water (d) vinegar
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) yeast (d) turmeric powder
27. 27.🫧 Which of these is a base? (a) sugar water (b) baking soda water (c) curd (d) vinegar
28. 28.True or false: a comb is needed for the turmeric test. (a) False (b) True
29. 29.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
30. 30.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
31. 31.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is hot (d) soap is an acid
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) lemon juice (d) a mirror
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
34. 34.🫧 Which of these is neutral? (a) tamarind water (b) lemon juice (c) salt water (d) baking soda water
35. 35.True or false: water is needed for the turmeric test. (a) True (b) False
36. 36.🫧 Which of these is a base? (a) vinegar (b) orange juice (c) curd (d) detergent water
37. 37.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
38. 38.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) a magnet (d) soap solution
39. 39.True or false: sugar water keeps turmeric yellow. (a) True (b) False
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False

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