Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 662 · 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 needed for the turmeric test? (a) a balloon (b) turmeric powder (c) a mirror (d) a magnet
2. 2.True or false: tamarind water is a base. (a) False (b) True
3. 3.🟡 Which of these keeps turmeric yellow? (a) salt water (b) baking soda water (c) soap solution (d) detergent water
4. 4.True or false: tamarind water is neutral. (a) True (b) False
5. 5.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
6. 6.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
8. 8.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the colour we see (c) the turmeric paper (d) the light we look in
10. 10.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
11. 11.⚖️ 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
12. 12.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a magnet (c) turmeric powder (d) a dropper or spoon
14. 14.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) green (d) it stays white
15. 15.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
16. 16.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
17. 17.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) white paper strips (d) a magnet
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) lemon juice (d) soap solution
21. 21.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
22. 22.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
23. 23.🫧 Which of these is an acid? (a) soap solution (b) curd (c) detergent water (d) salt water
24. 24.🫧 Which of these is a base? (a) orange juice (b) lemon juice (c) vinegar (d) baking soda water
25. 25.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water
26. 26.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
27. 27.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
29. 29.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
30. 30.🔍 Which is the odd one out? (a) vinegar (b) plain water (c) soap solution (d) sugar water
31. 31.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
32. 32.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) white at once (d) bright blue
33. 33.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
34. 34.True or false: detergent water is an acid. (a) False (b) True
35. 35.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.True or false: vinegar is a base. (a) True (b) False
37. 37.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a mirror (c) lemon juice (d) white paper strips
40. 40.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow

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