Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 891 · 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 liquid we test is kept the same. (a) False (b) True
2. 2.⚖️ 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 liquid we test (d) the number of drops
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) turmeric powder (d) a balloon
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
6. 6.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) turmeric powder (c) a balloon (d) yeast
7. 7.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
8. 8.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) yeast (c) soap solution (d) water
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) tamarind water (d) detergent water
10. 10.⚖️ 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
11. 11.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
12. 12.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
13. 13.🫧 Which of these is a base? (a) plain water (b) soap solution (c) sugar water (d) curd
14. 14.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) lemon juice (d) a mirror
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) lemon juice (c) water (d) soap solution
16. 16.⚖️ 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
17. 17.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
19. 19.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
20. 20.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
21. 21.True or false: orange juice is a base. (a) False (b) True
22. 22.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
23. 23.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
24. 24.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) reddish-brown (d) bright blue
25. 25.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
29. 29.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
30. 30.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
31. 31.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) sugar water (d) baking soda water
32. 32.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) lemon juice (d) salt water
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
35. 35.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) turmeric powder (d) a magnet
36. 36.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.True or false: lemon juice is neutral. (a) False (b) True
38. 38.🫧 Which of these is a base? (a) lemon juice (b) detergent water (c) curd (d) salt water
39. 39.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
40. 40.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black

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