Turmeric Indicator Experiment Worksheet

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

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