Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 438 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) yeast (d) turmeric powder
5. 5.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) tamarind water (d) detergent water
6. 6.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) baking soda water (c) detergent water (d) soap solution
7. 7.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
8. 8.True or false: yeast is not needed for the turmeric test. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) salt water (d) lemon juice
10. 10.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the colour we see (d) the light we look in
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) water (d) a comb
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
14. 14.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
15. 15.True or false: detergent water is a base. (a) False (b) True
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
17. 17.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) a comb (d) soap solution
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) white paper strips (d) a dropper or spoon
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) lemon juice (d) plain water
21. 21.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
22. 22.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red
23. 23.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
24. 24.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is hot (d) soap is an acid
25. 25.True or false: vinegar keeps turmeric yellow. (a) True (b) False
26. 26.True or false: salt water keeps turmeric yellow. (a) False (b) True
27. 27.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) a battery cell (d) soap solution
28. 28.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
29. 29.🛟 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
30. 30.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
31. 31.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
32. 32.⚖️ 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
33. 33.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
34. 34.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
35. 35.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) plain water (d) baking soda water
37. 37.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
38. 38.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) soap solution (d) salt water
39. 39.True or false: curd is a base. (a) True (b) False
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True

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