Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 895 · 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? True or false: the turmeric paper is kept the same. (a) True (b) False
2. 2.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
3. 3.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) vinegar (d) soap solution
4. 4.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
5. 5.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
7. 7.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) white paper strips (c) lemon juice (d) water
8. 8.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) detergent water (d) salt water
9. 9.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) plain water (d) soap solution
10. 10.⚖️ 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
11. 11.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) detergent water (d) soap solution
12. 12.🫧 Which of these is neutral? (a) detergent water (b) baking soda water (c) vinegar (d) plain water
13. 13.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
14. 14.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) turmeric powder (d) a battery cell
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a dropper or spoon (d) a comb
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
18. 18.True or false: a comb is needed for the turmeric test. (a) True (b) False
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) water (d) a magnet
20. 20.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) turmeric powder (d) a battery cell
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.🫧 Which of these is neutral? (a) sugar water (b) soap solution (c) curd (d) baking soda water
23. 23.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
24. 24.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) soap solution (d) sugar water
25. 25.True or false: orange juice is a base. (a) True (b) False
26. 26.⚖️ 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
27. 27.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
28. 28.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) vinegar (d) plain water
29. 29.True or false: water is not needed for the turmeric test. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) plain water (d) baking soda water
31. 31.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) detergent water (d) lemon juice
32. 32.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
33. 33.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a magnet (c) a mirror (d) a battery cell
34. 34.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a balloon (c) turmeric powder (d) water
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
38. 38.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
39. 39.🫧 Which of these is a base? (a) soap solution (b) tamarind water (c) orange juice (d) lemon juice
40. 40.True or false: orange juice is an acid. (a) False (b) True

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