Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 982 · 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.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
3. 3.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) yeast (c) a comb (d) a magnet
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) turmeric powder (d) water
6. 6.True or false: a comb is not needed for the turmeric test. (a) True (b) False
7. 7.True or false: yeast is not needed for the turmeric test. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) tamarind water (b) plain water (c) sugar water (d) baking soda water
9. 9.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
10. 10.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) vinegar (d) detergent water
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
14. 14.⚖️ 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 liquid we test (d) the turmeric paper
15. 15.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
16. 16.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
17. 17.⚖️ 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
18. 18.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
19. 19.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
20. 20.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) tamarind water (d) soap solution
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) soap solution (d) lemon juice
23. 23.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) sugar water (d) baking soda water
24. 24.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
25. 25.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) lemon juice (d) tamarind water
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) white paper strips (c) lemon juice (d) turmeric powder
27. 27.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
28. 28.True or false: detergent water keeps turmeric yellow. (a) True (b) False
29. 29.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
30. 30.⚖️ 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
31. 31.🫧 Which of these is an acid? (a) sugar water (b) lemon juice (c) salt water (d) plain water
32. 32.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
33. 33.⚖️ 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 light we look in
34. 34.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) salt water (c) plain water (d) vinegar
36. 36.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) bright blue (d) green
37. 37.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
38. 38.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
39. 39.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) detergent water (c) tamarind water (d) vinegar

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