Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 632 · 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 liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
3. 3.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) water (d) soap solution
5. 5.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the colour we see (c) the light we look in (d) the liquid we test
8. 8.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) white paper strips (d) a battery cell
9. 9.True or false: a comb is not needed for the turmeric test. (a) True (b) False
10. 10.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) water (d) a battery cell
13. 13.🫧 Which of these is neutral? (a) vinegar (b) orange juice (c) sugar water (d) curd
14. 14.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) tamarind water (c) sugar water (d) vinegar
15. 15.True or false: a magnet is needed for the turmeric test. (a) False (b) True
16. 16.🫧 Which of these is neutral? (a) tamarind water (b) vinegar (c) plain water (d) orange juice
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) soap solution (d) tamarind water
18. 18.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
19. 19.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
20. 20.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a balloon (c) a dropper or spoon (d) water
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) lemon juice (d) a dropper or spoon
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) turmeric powder (d) yeast
25. 25.⚖️ 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
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
29. 29.True or false: soap solution is needed for the turmeric test. (a) True (b) False
30. 30.True or false: curd is neutral. (a) True (b) False
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) salt water (c) detergent water (d) vinegar
32. 32.True or false: vinegar is a base. (a) False (b) True
33. 33.True or false: soap solution keeps turmeric yellow. (a) True (b) False
34. 34.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the light we look in (d) the number of drops
37. 37.🫧 Which of these is a base? (a) salt water (b) soap solution (c) tamarind water (d) orange juice
38. 38.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) tamarind water (d) lemon juice
39. 39.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it

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