Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 774 · 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 colour we see is the one thing we change. (a) False (b) True
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) turmeric powder (d) a comb
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) water (d) a magnet
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the light we look in
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) yeast (d) water
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
9. 9.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
10. 10.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
11. 11.True or false: soap solution keeps turmeric yellow. (a) True (b) False
12. 12.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) reddish-brown (d) bright blue
14. 14.True or false: sugar water is an acid. (a) False (b) True
15. 15.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
16. 16.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) soap solution (d) lemon juice
17. 17.🫧 Which of these is a base? (a) baking soda water (b) curd (c) tamarind water (d) vinegar
18. 18.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
20. 20.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) water (d) a battery cell
22. 22.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns blue (d) it turns yellow again
25. 25.True or false: orange juice is an acid. (a) True (b) False
26. 26.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) a dropper or spoon (c) turmeric powder (d) soap solution
29. 29.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.🛟 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
31. 31.True or false: salt water keeps turmeric yellow. (a) True (b) False
32. 32.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
33. 33.⚖️ 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 colour we see (c) the turmeric paper (d) the liquid we test
34. 34.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) salt water (d) tamarind water
35. 35.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) yeast (d) a dropper or spoon
36. 36.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) white paper strips (c) a dropper or spoon (d) water
37. 37.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) vinegar (d) soap solution
38. 38.🫧 Which of these is an acid? (a) sugar water (b) tamarind water (c) salt water (d) plain water
39. 39.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
40. 40.True or false: yeast is needed for the turmeric test. (a) False (b) True

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