Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 215 · 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) False (b) True
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the number of drops (c) the colour we see (d) the light we look in
4. 4.🫧 Which of these is a base? (a) curd (b) orange juice (c) soap solution (d) lemon juice
5. 5.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
6. 6.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap is hot (d) soap water is a base
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
8. 8.True or false: a mirror is needed for the turmeric test. (a) False (b) True
9. 9.🫧 Which of these is an acid? (a) sugar water (b) soap solution (c) salt water (d) curd
10. 10.⚖️ 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
11. 11.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) vinegar (d) lemon juice
13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) reddish-brown (d) it turns blue
14. 14.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
15. 15.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
16. 16.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
17. 17.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
19. 19.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) it stays white (d) green
20. 20.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) a balloon (d) water
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
22. 22.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) turmeric powder (d) a battery cell
23. 23.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
24. 24.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) water (d) a battery cell
25. 25.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a battery cell (c) a magnet (d) a mirror
26. 26.🫧 Which of these is a base? (a) salt water (b) baking soda water (c) tamarind water (d) orange juice
27. 27.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) turmeric powder (d) a battery cell
28. 28.🫧 Which of these is neutral? (a) plain water (b) baking soda water (c) lemon juice (d) detergent water
29. 29.True or false: water is not needed for the turmeric test. (a) True (b) False
30. 30.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) vinegar (d) lemon juice
31. 31.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) plain water (d) baking soda water
32. 32.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) yeast (c) lemon juice (d) white paper strips
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) soap solution (d) a balloon
34. 34.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
35. 35.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
36. 36.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) white paper strips (d) a dropper or spoon
38. 38.True or false: detergent water keeps turmeric yellow. (a) True (b) False
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
40. 40.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform

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