Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 714 · 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.True or false: sugar water is neutral. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) baking soda water (d) detergent water
3. 3.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
4. 4.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) a battery cell (d) soap solution
5. 5.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) soap solution (d) detergent water
7. 7.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
8. 8.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it stays yellow (d) it turns green
9. 9.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
10. 10.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
11. 11.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
12. 12.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is hot (d) soap is an acid
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) tamarind water (d) detergent water
15. 15.True or false: detergent water keeps turmeric yellow. (a) True (b) False
16. 16.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the light we look in (c) the colour we see (d) the number of drops
18. 18.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a balloon (d) water
21. 21.🫧 Which of these is neutral? (a) lemon juice (b) curd (c) sugar water (d) baking soda water
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
23. 23.True or false: vinegar keeps turmeric yellow. (a) True (b) False
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the number of drops
25. 25.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
26. 26.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
28. 28.⚖️ 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 change it (c) we measure it
29. 29.🫧 Which of these is a base? (a) orange juice (b) tamarind water (c) salt water (d) soap solution
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) a dropper or spoon (c) white paper strips (d) lemon juice
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
32. 32.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
33. 33.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it disappears (d) it turns yellow again
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
36. 36.True or false: a comb is not needed for the turmeric test. (a) False (b) True
37. 37.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) plain water (d) soap solution
38. 38.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water

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